[Touch-packages] [Bug 1551351] Re: dhclient does not renew leases

[Dan Kegel]

(although on ubuntu 18.04 desktop, the underlying network system might
be systemd rather than dhclient; it's hard to tell, there are so many
layers to keep track of, and they keep changing)

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https://bugs.launchpad.net/bugs/1551351

Title:
  dhclient does not renew leases

Status in bind9 package in Ubuntu:
  Fix Released
Status in isc-dhcp package in Ubuntu:
  Fix Released
Status in bind9 source package in Xenial:
  Fix Released
Status in isc-dhcp source package in Xenial:
  Fix Released

Bug description:
  Release: Xenial

  I think this only recently started after some bind9 updates triggered a 
rebuild. When booting dhclient gets started and acquires an IP address, but it 
does seem to lock up somewhere as it does not renew the lease.
  In my environment I set the lease time to 5 minutes, so I notice such things 
rather soon. I looked on the dhcp server side but saw any further dhcp messages 
come in from the client side.

  Related bugs:
   * bug 1551415:  systemctl stop networking hang / timeout 

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: isc-dhcp-client 4.3.3-5ubuntu8
  ProcVersionSignature: Ubuntu 4.4.0-9.24-generic 4.4.3
  Uname: Linux 4.4.0-9-generic x86_64
  ApportVersion: 2.20-0ubuntu3
  Architecture: amd64
  Date: Mon Feb 29 12:32:52 2016
  DhclientLeases:

  SourcePackage: isc-dhcp
  UpgradeStatus: No upgrade log present (probably fresh install)

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[Touch-packages] [Bug 1551351] Re: dhclient does not renew leases

[Dan Kegel]

This affects me on Ubuntu 18.04 desktop.  After changing hostname, I
have to use nmcli c down... nmcli c up... to update the dynamic DNS
entry.

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https://bugs.launchpad.net/bugs/1551351

Title:
  dhclient does not renew leases

Status in bind9 package in Ubuntu:
  Fix Released
Status in isc-dhcp package in Ubuntu:
  Fix Released
Status in bind9 source package in Xenial:
  Fix Released
Status in isc-dhcp source package in Xenial:
  Fix Released

Bug description:
  Release: Xenial

  I think this only recently started after some bind9 updates triggered a 
rebuild. When booting dhclient gets started and acquires an IP address, but it 
does seem to lock up somewhere as it does not renew the lease.
  In my environment I set the lease time to 5 minutes, so I notice such things 
rather soon. I looked on the dhcp server side but saw any further dhcp messages 
come in from the client side.

  Related bugs:
   * bug 1551415:  systemctl stop networking hang / timeout 

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: isc-dhcp-client 4.3.3-5ubuntu8
  ProcVersionSignature: Ubuntu 4.4.0-9.24-generic 4.4.3
  Uname: Linux 4.4.0-9-generic x86_64
  ApportVersion: 2.20-0ubuntu3
  Architecture: amd64
  Date: Mon Feb 29 12:32:52 2016
  DhclientLeases:

  SourcePackage: isc-dhcp
  UpgradeStatus: No upgrade log present (probably fresh install)

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[Touch-packages] [Bug 1551351] Re: dhclient does not renew leases

[Andreas Mohr]

Major categorization aspects:
- this very important core functionality (properly reliable resource management 
of DHCP leases, also in suspend-to-RAM etc.) **NEVER EVER WORKS** (exclusively 
suspend-to-RAM use case here, ending up with stale IP address):
  - this did not work in 12.04LTS
  - this still did not work after upgrade to 14.04LTS
  - this STILL did not work after upgrade to 16.04LTS (recently upgraded, i.e. 
after activity of #12 which says that it DID work there, yet perhaps not 
suspend-to-RAM)
- importance of this bug should be "a lot higher than High"
  Justification:
  - messes with/breaks (CORRUPTS!!) environment even *beyond* local system 
scope (--> inacceptable!!), due to continuing communication via a stale IP 
address which has long since been re-assigned to other hosts (as can be 
verified via DNS query)
  - has been observed in *all* recent LTS releases (which are expected to work 
fine in large enterpriseish environments??)
--> Ubuntu release process is sorely missing reliable verification 
(persistently executed test case) for this core functionality, to ensure that 
this is (and keeps!) not causing damage, at least in production (stable) 
distributions

Example to achieve fixing stale IP (renew DHCP lease):
nmcli c
nmcli c down uuid 
nmcli c up uuid 

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You received this bug notification because you are a member of Ubuntu
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https://bugs.launchpad.net/bugs/1551351

Title:
  dhclient does not renew leases

Status in bind9 package in Ubuntu:
  Fix Released
Status in isc-dhcp package in Ubuntu:
  Fix Released
Status in bind9 source package in Xenial:
  Fix Released
Status in isc-dhcp source package in Xenial:
  Fix Released

Bug description:
  Release: Xenial

  I think this only recently started after some bind9 updates triggered a 
rebuild. When booting dhclient gets started and acquires an IP address, but it 
does seem to lock up somewhere as it does not renew the lease.
  In my environment I set the lease time to 5 minutes, so I notice such things 
rather soon. I looked on the dhcp server side but saw any further dhcp messages 
come in from the client side.

  Related bugs:
   * bug 1551415:  systemctl stop networking hang / timeout 

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: isc-dhcp-client 4.3.3-5ubuntu8
  ProcVersionSignature: Ubuntu 4.4.0-9.24-generic 4.4.3
  Uname: Linux 4.4.0-9-generic x86_64
  ApportVersion: 2.20-0ubuntu3
  Architecture: amd64
  Date: Mon Feb 29 12:32:52 2016
  DhclientLeases:

  SourcePackage: isc-dhcp
  UpgradeStatus: No upgrade log present (probably fresh install)

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[Touch-packages] [Bug 1551351] Re: dhclient does not renew leases

[Petr Suchý]

This is happening only if "Ethernet Lan Option Rom" is checked (active)
in BIOS (ThinkPad X230). So there is the reason. After disabled this
option IP is not lost after first renew.

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You received this bug notification because you are a member of Ubuntu
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https://bugs.launchpad.net/bugs/1551351

Title:
  dhclient does not renew leases

Status in bind9 package in Ubuntu:
  Fix Released
Status in isc-dhcp package in Ubuntu:
  Fix Released
Status in bind9 source package in Xenial:
  Fix Released
Status in isc-dhcp source package in Xenial:
  Fix Released

Bug description:
  Release: Xenial

  I think this only recently started after some bind9 updates triggered a 
rebuild. When booting dhclient gets started and acquires an IP address, but it 
does seem to lock up somewhere as it does not renew the lease.
  In my environment I set the lease time to 5 minutes, so I notice such things 
rather soon. I looked on the dhcp server side but saw any further dhcp messages 
come in from the client side.

  Related bugs:
   * bug 1551415:  systemctl stop networking hang / timeout 

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: isc-dhcp-client 4.3.3-5ubuntu8
  ProcVersionSignature: Ubuntu 4.4.0-9.24-generic 4.4.3
  Uname: Linux 4.4.0-9-generic x86_64
  ApportVersion: 2.20-0ubuntu3
  Architecture: amd64
  Date: Mon Feb 29 12:32:52 2016
  DhclientLeases:

  SourcePackage: isc-dhcp
  UpgradeStatus: No upgrade log present (probably fresh install)

To manage notifications about this bug go to:
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[Touch-packages] [Bug 1551351] Re: dhclient does not renew leases

[Petr Suchý]

Some details:
===
dpkg --list|grep -u dhc
ii  isc-dhcp-client   4.3.3-5ubuntu12.7 
   amd64DHCP client for automatically obtaining 
an IP address
ii  isc-dhcp-common   4.3.3-5ubuntu12.7 
   amd64common files used by all of the 
isc-dhcp packages
===
dpkg --list|grep -i bind9
ii  bind9-host1:9.10.3.dfsg.P4-8ubuntu1.10  
   amd64Version of 'host' bundled with BIND 9.X
ii  libbind9-140:amd641:9.10.3.dfsg.P4-8ubuntu1.10  
   amd64BIND9 Shared Library used by BIND
rc  libbind9-90   1:9.9.5.dfsg-3ubuntu0.8   
   amd64BIND9 Shared Library used by BIND

-- 
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to isc-dhcp in Ubuntu.
https://bugs.launchpad.net/bugs/1551351

Title:
  dhclient does not renew leases

Status in bind9 package in Ubuntu:
  Fix Released
Status in isc-dhcp package in Ubuntu:
  Fix Released
Status in bind9 source package in Xenial:
  Fix Released
Status in isc-dhcp source package in Xenial:
  Fix Released

Bug description:
  Release: Xenial

  I think this only recently started after some bind9 updates triggered a 
rebuild. When booting dhclient gets started and acquires an IP address, but it 
does seem to lock up somewhere as it does not renew the lease.
  In my environment I set the lease time to 5 minutes, so I notice such things 
rather soon. I looked on the dhcp server side but saw any further dhcp messages 
come in from the client side.

  Related bugs:
   * bug 1551415:  systemctl stop networking hang / timeout 

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: isc-dhcp-client 4.3.3-5ubuntu8
  ProcVersionSignature: Ubuntu 4.4.0-9.24-generic 4.4.3
  Uname: Linux 4.4.0-9-generic x86_64
  ApportVersion: 2.20-0ubuntu3
  Architecture: amd64
  Date: Mon Feb 29 12:32:52 2016
  DhclientLeases:

  SourcePackage: isc-dhcp
  UpgradeStatus: No upgrade log present (probably fresh install)

To manage notifications about this bug go to:
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[Touch-packages] [Bug 1551351] Re: dhclient does not renew leases

[Petr Suchý]

I am affected with this bug too. First renew of IP is failing, after reconnect 
everything is ok until next reboot. Shutdown is often suspended for some time 
(always when shutdown is soon after start or reboot).
Ubuntu 16.04.3 LTS
isc-dhclient-4.3.3

-- 
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to isc-dhcp in Ubuntu.
https://bugs.launchpad.net/bugs/1551351

Title:
  dhclient does not renew leases

Status in bind9 package in Ubuntu:
  Fix Released
Status in isc-dhcp package in Ubuntu:
  Fix Released
Status in bind9 source package in Xenial:
  Fix Released
Status in isc-dhcp source package in Xenial:
  Fix Released

Bug description:
  Release: Xenial

  I think this only recently started after some bind9 updates triggered a 
rebuild. When booting dhclient gets started and acquires an IP address, but it 
does seem to lock up somewhere as it does not renew the lease.
  In my environment I set the lease time to 5 minutes, so I notice such things 
rather soon. I looked on the dhcp server side but saw any further dhcp messages 
come in from the client side.

  Related bugs:
   * bug 1551415:  systemctl stop networking hang / timeout 

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: isc-dhcp-client 4.3.3-5ubuntu8
  ProcVersionSignature: Ubuntu 4.4.0-9.24-generic 4.4.3
  Uname: Linux 4.4.0-9-generic x86_64
  ApportVersion: 2.20-0ubuntu3
  Architecture: amd64
  Date: Mon Feb 29 12:32:52 2016
  DhclientLeases:

  SourcePackage: isc-dhcp
  UpgradeStatus: No upgrade log present (probably fresh install)

To manage notifications about this bug go to:
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[Touch-packages] [Bug 1551351] Re: dhclient does not renew leases

[Mike Carifio]

I did a fresh install of artful on a shuttle SZ170 with the following
ethernet adapters according to `lshw`:

  *-network
description: Ethernet interface
product: I211 Gigabit Network Connection
vendor: Intel Corporation
physical id: 0
bus info: pci@:03:00.0
logical name: enp3s0
version: 03
serial: 80:ee:73:c8:ec:1a
size: 1Gbit/s
capacity: 1Gbit/s
width: 32 bits
clock: 33MHz
capabilities: pm msi msix pciexpress bus_master cap_list 
ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=igb 
driverversion=5.4.0-k duplex=full firmware=0. 6-1 ip=192.168.0.14 latency=0 
link=yes multicast=yes port=twisted 

and

*-network
 description: Ethernet interface
 product: Ethernet Connection (2) I219-LM
 vendor: Intel Corporation
 physical id: 1f.6
 bus info: pci@:00:1f.6
 logical name: enp0s31f6
 version: 31
 serial: 80:ee:73:c8:ec:1b
 size: 1Gbit/s
 capacity: 1Gbit/s
 width: 32 bits
 clock: 33MHz
 capabilities: pm msi bus_master cap_list ethernet physical tp 10bt 
10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
 configuration: autonegotiation=on broadcast=yes driver=e1000e 
driverversion=3.2.6-k duplex=full firmware=0.8-4 latency=0 link=yes 
multicast=yes port=twisted pair speed=1Gbit/s
 resources: irq:126 memory:df20-df21



I have dhclient and bind9 installed:

root@atlantis:~# dhclient --version
isc-dhclient-4.3.5
root@atlantis:~# dpkg --list|grep -i dhc
ii  dnsmasq-base   2.78-1   
   amd64Small caching DNS proxy and DHCP/TFTP server
ii  isc-dhcp-client4.3.5-3ubuntu2   
   amd64DHCP client for automatically obtaining an IP address
ii  isc-dhcp-common4.3.5-3ubuntu2   
   amd64common manpages relevant to all of the isc-dhcp packages
root@atlantis:~# dpkg --list|grep -i bind9
ii  bind9-host 1:9.10.3.dfsg.P4-12.6ubuntu1 
   amd64Version of 'host' bundled with BIND 9.X
ii  libbind9-140:amd64 1:9.10.3.dfsg.P4-12.6ubuntu1 
   amd64BIND9 Shared Library used by BIND

I've disabled the second ethernet adapter. Periodically `enp3s0` looses
its IP address which it got via dhcp from my cable router. I think its
related to this bug. I understand the basics of dhcp (I can run some
commands), so I don't know the next steps to continue the diagnosis.

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You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to isc-dhcp in Ubuntu.
https://bugs.launchpad.net/bugs/1551351

Title:
  dhclient does not renew leases

Status in bind9 package in Ubuntu:
  Fix Released
Status in isc-dhcp package in Ubuntu:
  Fix Released
Status in bind9 source package in Xenial:
  Fix Released
Status in isc-dhcp source package in Xenial:
  Fix Released

Bug description:
  Release: Xenial

  I think this only recently started after some bind9 updates triggered a 
rebuild. When booting dhclient gets started and acquires an IP address, but it 
does seem to lock up somewhere as it does not renew the lease.
  In my environment I set the lease time to 5 minutes, so I notice such things 
rather soon. I looked on the dhcp server side but saw any further dhcp messages 
come in from the client side.

  Related bugs:
   * bug 1551415:  systemctl stop networking hang / timeout 

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: isc-dhcp-client 4.3.3-5ubuntu8
  ProcVersionSignature: Ubuntu 4.4.0-9.24-generic 4.4.3
  Uname: Linux 4.4.0-9-generic x86_64
  ApportVersion: 2.20-0ubuntu3
  Architecture: amd64
  Date: Mon Feb 29 12:32:52 2016
  DhclientLeases:

  SourcePackage: isc-dhcp
  UpgradeStatus: No upgrade log present (probably fresh install)

To manage notifications about this bug go to:
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[Touch-packages] [Bug 1551351] Re: dhclient does not renew leases

[Alon Albert]

I believe I am still affected by this bug.

$ dhclient --version
isc-dhclient-4.3.3

My lease is for 24 hours and every day, I get disconnected. If I
disconnect and reconnect the Ethernet cable, connection is restored.

kern.log shows this pattern:

Jan 24 03:17:12 kubuntu NetworkManager[1132]:   [1485220632.3687]   
address 10.0.0.6
Jan 24 03:17:12 kubuntu NetworkManager[1132]:   [1485220632.3957]   plen 
24 (255.255.255.0)
Jan 24 03:17:12 kubuntu NetworkManager[1132]:   [1485220632.3957]   
gateway 10.0.0.200
Jan 24 03:17:12 kubuntu NetworkManager[1132]:   [1485220632.3957]   
server identifier 10.0.0.200
Jan 24 03:17:12 kubuntu NetworkManager[1132]:   [1485220632.3958]   lease 
time 86400
Jan 24 03:17:12 kubuntu NetworkManager[1132]:   [1485220632.3958]   
hostname 'kubuntu'
Jan 24 03:17:12 kubuntu NetworkManager[1132]:   [1485220632.3958]   
nameserver '8.8.8.8'
Jan 24 03:17:12 kubuntu NetworkManager[1132]:   [1485220632.3958]   
nameserver '10.0.0.200'
Jan 24 03:17:12 kubuntu NetworkManager[1132]:   [1485220632.4108] dhcp4 
(enp1s0): state changed bound -> bound
Jan 25 03:18:24 kubuntu kernel: [377372.984065] CIFS VFS: Server 10.0.0.2 has 
not responded in 120 seconds. Reconnecting...

You can see that on Jan 24 at 3:17 I got a 24 hour lease. On Jan 25 at
3:18, almost exactly 24 hours later, I get a network error. There is
nothing in between.


This pattern repeats itself every day at around the same time.

-- 
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to isc-dhcp in Ubuntu.
https://bugs.launchpad.net/bugs/1551351

Title:
  dhclient does not renew leases

Status in bind9 package in Ubuntu:
  Fix Released
Status in isc-dhcp package in Ubuntu:
  Fix Released
Status in bind9 source package in Xenial:
  Fix Released
Status in isc-dhcp source package in Xenial:
  Fix Released

Bug description:
  Release: Xenial

  I think this only recently started after some bind9 updates triggered a 
rebuild. When booting dhclient gets started and acquires an IP address, but it 
does seem to lock up somewhere as it does not renew the lease.
  In my environment I set the lease time to 5 minutes, so I notice such things 
rather soon. I looked on the dhcp server side but saw any further dhcp messages 
come in from the client side.

  Related bugs:
   * bug 1551415:  systemctl stop networking hang / timeout 

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: isc-dhcp-client 4.3.3-5ubuntu8
  ProcVersionSignature: Ubuntu 4.4.0-9.24-generic 4.4.3
  Uname: Linux 4.4.0-9-generic x86_64
  ApportVersion: 2.20-0ubuntu3
  Architecture: amd64
  Date: Mon Feb 29 12:32:52 2016
  DhclientLeases:

  SourcePackage: isc-dhcp
  UpgradeStatus: No upgrade log present (probably fresh install)

To manage notifications about this bug go to:
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[Touch-packages] [Bug 1551351] Re: dhclient does not renew leases

[Jean-Max Reymond]

I have compiled dhclient v4.3.5 from the isc site, installed and it does not 
work. 
I have to create a new directory /var/db and dhclient 4.3.5 put 
dhclient6.leases in this directory
No trace in syslog, ifconfig eno1 seems OK but ping6 fails

-- 
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to isc-dhcp in Ubuntu.
https://bugs.launchpad.net/bugs/1551351

Title:
  dhclient does not renew leases

Status in bind9 package in Ubuntu:
  Fix Released
Status in isc-dhcp package in Ubuntu:
  Fix Released
Status in bind9 source package in Xenial:
  Fix Released
Status in isc-dhcp source package in Xenial:
  Fix Released

Bug description:
  Release: Xenial

  I think this only recently started after some bind9 updates triggered a 
rebuild. When booting dhclient gets started and acquires an IP address, but it 
does seem to lock up somewhere as it does not renew the lease.
  In my environment I set the lease time to 5 minutes, so I notice such things 
rather soon. I looked on the dhcp server side but saw any further dhcp messages 
come in from the client side.

  Related bugs:
   * bug 1551415:  systemctl stop networking hang / timeout 

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: isc-dhcp-client 4.3.3-5ubuntu8
  ProcVersionSignature: Ubuntu 4.4.0-9.24-generic 4.4.3
  Uname: Linux 4.4.0-9-generic x86_64
  ApportVersion: 2.20-0ubuntu3
  Architecture: amd64
  Date: Mon Feb 29 12:32:52 2016
  DhclientLeases:

  SourcePackage: isc-dhcp
  UpgradeStatus: No upgrade log present (probably fresh install)

To manage notifications about this bug go to:
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[Touch-packages] [Bug 1551351] Re: dhclient does not renew leases

[Pierre Clérissi]

Hi,
I've compiled and setup the isc dhclient v4.3.5 downloaded from the isc site 
and everything works fine.

-- 
You received this bug notification because you are a member of Ubuntu
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https://bugs.launchpad.net/bugs/1551351

Title:
  dhclient does not renew leases

Status in bind9 package in Ubuntu:
  Fix Released
Status in isc-dhcp package in Ubuntu:
  Fix Released
Status in bind9 source package in Xenial:
  Fix Released
Status in isc-dhcp source package in Xenial:
  Fix Released

Bug description:
  Release: Xenial

  I think this only recently started after some bind9 updates triggered a 
rebuild. When booting dhclient gets started and acquires an IP address, but it 
does seem to lock up somewhere as it does not renew the lease.
  In my environment I set the lease time to 5 minutes, so I notice such things 
rather soon. I looked on the dhcp server side but saw any further dhcp messages 
come in from the client side.

  Related bugs:
   * bug 1551415:  systemctl stop networking hang / timeout 

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: isc-dhcp-client 4.3.3-5ubuntu8
  ProcVersionSignature: Ubuntu 4.4.0-9.24-generic 4.4.3
  Uname: Linux 4.4.0-9-generic x86_64
  ApportVersion: 2.20-0ubuntu3
  Architecture: amd64
  Date: Mon Feb 29 12:32:52 2016
  DhclientLeases:

  SourcePackage: isc-dhcp
  UpgradeStatus: No upgrade log present (probably fresh install)

To manage notifications about this bug go to:
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[Touch-packages] [Bug 1551351] Re: dhclient does not renew leases

[Florin Gherendi]

It happens to me after recent updates in 16.04 LTS. On boot I get an IP
from the DHCP server, all is well, but the IP is dropped after a while,
without complaint from network manager applet which still shows like the
network is connected. Unplugging and plugging the ethernet cable solves
the problem for the whole day. Looking in the syslog it appears that
NetworkManager is started at boot time and then systemd tries to start
it again, causing an IP conflict:

Nov  8 09:45:14 floring-desktop NetworkManager[1611]:   [1478591114.2788] 
device (eth0): link disconnected (deferring action for 4 seconds)
Nov  8 09:45:14 floring-desktop kernel: [ 1906.680617] tg3 :03:00.0 eth0: 
Link is down
Nov  8 09:45:16 floring-desktop kernel: [ 1908.580879] tg3 :03:00.0 eth0: 
Link is up at 100 Mbps, full duplex
Nov  8 09:45:16 floring-desktop kernel: [ 1908.580885] tg3 :03:00.0 eth0: 
Flow control is on for TX and on for RX
Nov  8 09:45:16 floring-desktop kernel: [ 1908.580888] tg3 :03:00.0 eth0: 
EEE is disabled
Nov  8 09:45:16 floring-desktop NetworkManager[1611]:   [1478591116.1791] 
device (eth0): link connected
Nov  8 09:45:16 floring-desktop NetworkManager[1611]:   [1478591116.1792] 
device (eth0): DHCPv4 lease renewal requested
Nov  8 09:45:16 floring-desktop NetworkManager[1611]:   [1478591116.1954] 
dhcp4 (eth0): canceled DHCP transaction, DHCP client pid 1915
Nov  8 09:45:16 floring-desktop NetworkManager[1611]:   [1478591116.1954] 
dhcp4 (eth0): state changed bound -> done
Nov  8 09:45:16 floring-desktop NetworkManager[1611]:   [1478591116.1960] 
dhcp4 (eth0): activation: beginning transaction (timeout in 45 seconds)
Nov  8 09:45:16 floring-desktop NetworkManager[1611]:   [1478591116.2110] 
dhcp4 (eth0): dhclient started with pid 6862
Nov  8 09:45:16 floring-desktop dhclient[6862]: DHCPREQUEST of 10.4.0.227 on 
eth0 to 255.255.255.255 port 67 (xid=0x2ec87280)
Nov  8 09:45:16 floring-desktop dhclient[6862]: DHCPACK of 10.4.0.227 from 
10.4.0.1
Nov  8 09:45:16 floring-desktop NetworkManager[1611]:   [1478591116.2735] 
  address 10.4.0.227
Nov  8 09:45:16 floring-desktop NetworkManager[1611]:   [1478591116.2736] 
  plen 24 (255.255.255.0)
Nov  8 09:45:16 floring-desktop NetworkManager[1611]:   [1478591116.2736] 
  gateway 10.4.0.1
Nov  8 09:45:16 floring-desktop NetworkManager[1611]:   [1478591116.2736] 
  server identifier 10.4.0.1
Nov  8 09:45:16 floring-desktop avahi-daemon[1280]: Joining mDNS multicast 
group on interface eth0.IPv4 with address 10.4.0.227.
Nov  8 09:45:16 floring-desktop NetworkManager[1611]:   [1478591116.2736] 
  lease time 600
[...]
Nov  8 09:45:16 floring-desktop NetworkManager[1611]:   [1478591116.2737] 
dhcp4 (eth0): state changed unknown -> bound
Nov  8 09:45:16 floring-desktop avahi-daemon[1280]: New relevant interface 
eth0.IPv4 for mDNS.
Nov  8 09:45:16 floring-desktop avahi-daemon[1280]: Registering new address 
record for 10.4.0.227 on eth0.IPv4.
Nov  8 09:45:16 floring-desktop NetworkManager[1611]:   [1478591116.2765] 
policy: set 'Wired connection 1' (eth0) as default for IPv4 routing and DNS
Nov  8 09:45:16 floring-desktop dbus[1301]: [system] Activating via systemd: 
service name='org.freedesktop.nm_dispatcher' 
unit='dbus-org.freedesktop.nm-dispatcher.service'
Nov  8 09:45:16 floring-desktop systemd[1]: Starting Network Manager Script 
Dispatcher Service...
Nov  8 09:45:16 floring-desktop dhclient[6862]: bound to 10.4.0.227 -- renewal 
in 279 seconds.
Nov  8 09:45:16 floring-desktop dbus[1301]: [system] Successfully activated 
service 'org.freedesktop.nm_dispatcher'
Nov  8 09:45:16 floring-desktop systemd[1]: Started Network Manager Script 
Dispatcher Service.
Nov  8 09:45:16 floring-desktop nm-dispatcher: req:1 'dhcp4-change' [eth0]: new 
request (1 scripts)
Nov  8 09:45:16 floring-desktop nm-dispatcher: req:1 'dhcp4-change' [eth0]: 
start running ordered scripts...
Nov  8 09:45:16 floring-desktop whoopsie[1270]: [09:45:16] online
Nov  8 09:45:17 floring-desktop nimDNSResponder: mDNSCoreReceiveResponse: 
Received from 10.4.0.227:5353   23 227.0.4.10.in-addr.arpa. PTR 
floring-desktop.local.
Nov  8 09:45:17 floring-desktop nimDNSResponder: mDNSCoreReceiveResponse: 
Unexpected conflict discarding   25 227.0.4.10.in-addr.arpa. PTR 
floring-desktop-2.local.
Nov  8 09:49:56 floring-desktop dhclient[6862]: DHCPREQUEST of 10.4.0.227 on 
eth0 to 10.4.0.1 port 67 (xid=0x2ec87280)
Nov  8 09:49:56 floring-desktop dhclient[6862]: DHCPACK of 10.4.0.227 from 
10.4.0.1
Nov  8 09:49:56 floring-desktop NetworkManager[1611]:   [1478591396.0689] 
  address 10.4.0.227
[...]
Nov  8 09:49:56 floring-desktop NetworkManager[1611]:   [1478591396.0691] 
dhcp4 (eth0): state changed bound -> bound
Nov  8 09:49:56 floring-desktop dbus[1301]: [system] Activating via systemd: 
service name='org.freedesktop.nm_dispatcher' 
unit='dbus-org.freedesktop.nm-dispatcher.service'
Nov  8 09:49:56 floring-desktop systemd[1]: Starting Network Manager Script 
Dispatcher Service...
Nov  8 09:49:56 

[Touch-packages] [Bug 1551351] Re: dhclient does not renew leases

[Jim Salter]

I am also still affected by this bug. I build small Ubuntu-based
routers, and the ones running Xenial are very likely to fail to get new
leases after the connection drops from the ISP, or if they're booted
while the connection to the ISP / the ISP's edge device is down.

I'm having to resort to monkey-patching and cron-jobs to reliably get IP
addresses on systems without NetworkManager, and it really stinks. =\

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You received this bug notification because you are a member of Ubuntu
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https://bugs.launchpad.net/bugs/1551351

Title:
  dhclient does not renew leases

Status in bind9 package in Ubuntu:
  Fix Released
Status in isc-dhcp package in Ubuntu:
  Fix Released
Status in bind9 source package in Xenial:
  Fix Released
Status in isc-dhcp source package in Xenial:
  Fix Released

Bug description:
  Release: Xenial

  I think this only recently started after some bind9 updates triggered a 
rebuild. When booting dhclient gets started and acquires an IP address, but it 
does seem to lock up somewhere as it does not renew the lease.
  In my environment I set the lease time to 5 minutes, so I notice such things 
rather soon. I looked on the dhcp server side but saw any further dhcp messages 
come in from the client side.

  Related bugs:
   * bug 1551415:  systemctl stop networking hang / timeout 

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: isc-dhcp-client 4.3.3-5ubuntu8
  ProcVersionSignature: Ubuntu 4.4.0-9.24-generic 4.4.3
  Uname: Linux 4.4.0-9-generic x86_64
  ApportVersion: 2.20-0ubuntu3
  Architecture: amd64
  Date: Mon Feb 29 12:32:52 2016
  DhclientLeases:

  SourcePackage: isc-dhcp
  UpgradeStatus: No upgrade log present (probably fresh install)

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[Touch-packages] [Bug 1551351] Re: dhclient does not renew leases

[m...@papersolve.com]

There's no package "isc-dhcp" - shouldn't this be fixed in the package
isc-dhcp-client? I am still affected by this bug.

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https://bugs.launchpad.net/bugs/1551351

Title:
  dhclient does not renew leases

Status in bind9 package in Ubuntu:
  Fix Released
Status in isc-dhcp package in Ubuntu:
  Fix Released
Status in bind9 source package in Xenial:
  Fix Released
Status in isc-dhcp source package in Xenial:
  Fix Released

Bug description:
  Release: Xenial

  I think this only recently started after some bind9 updates triggered a 
rebuild. When booting dhclient gets started and acquires an IP address, but it 
does seem to lock up somewhere as it does not renew the lease.
  In my environment I set the lease time to 5 minutes, so I notice such things 
rather soon. I looked on the dhcp server side but saw any further dhcp messages 
come in from the client side.

  Related bugs:
   * bug 1551415:  systemctl stop networking hang / timeout 

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: isc-dhcp-client 4.3.3-5ubuntu8
  ProcVersionSignature: Ubuntu 4.4.0-9.24-generic 4.4.3
  Uname: Linux 4.4.0-9-generic x86_64
  ApportVersion: 2.20-0ubuntu3
  Architecture: amd64
  Date: Mon Feb 29 12:32:52 2016
  DhclientLeases:

  SourcePackage: isc-dhcp
  UpgradeStatus: No upgrade log present (probably fresh install)

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[Touch-packages] [Bug 1551351] Re: dhclient does not renew leases

[Mathew Hodson]

** Changed in: isc-dhcp (Ubuntu)
Milestone: ubuntu-16.04 => None

** Changed in: bind9 (Ubuntu)
Milestone: ubuntu-16.04 => None

-- 
You received this bug notification because you are a member of Ubuntu
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https://bugs.launchpad.net/bugs/1551351

Title:
  dhclient does not renew leases

Status in bind9 package in Ubuntu:
  Fix Released
Status in isc-dhcp package in Ubuntu:
  Fix Released
Status in bind9 source package in Xenial:
  Fix Released
Status in isc-dhcp source package in Xenial:
  Fix Released

Bug description:
  Release: Xenial

  I think this only recently started after some bind9 updates triggered a 
rebuild. When booting dhclient gets started and acquires an IP address, but it 
does seem to lock up somewhere as it does not renew the lease.
  In my environment I set the lease time to 5 minutes, so I notice such things 
rather soon. I looked on the dhcp server side but saw any further dhcp messages 
come in from the client side.

  Related bugs:
   * bug 1551415:  systemctl stop networking hang / timeout 

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: isc-dhcp-client 4.3.3-5ubuntu8
  ProcVersionSignature: Ubuntu 4.4.0-9.24-generic 4.4.3
  Uname: Linux 4.4.0-9-generic x86_64
  ApportVersion: 2.20-0ubuntu3
  Architecture: amd64
  Date: Mon Feb 29 12:32:52 2016
  DhclientLeases:

  SourcePackage: isc-dhcp
  UpgradeStatus: No upgrade log present (probably fresh install)

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[Touch-packages] [Bug 1551351] Re: dhclient does not renew leases

[Stefan Bader]

We have some testing packages that can be obtained by adding Lamont's
PPA (sudo apt-add-ppa ppa:lamont/ppa). From local testing this looks to
be solving at least the lease renewals. At least for me a normal kill
still seems not enough to end the dhclient daemon.

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You received this bug notification because you are a member of Ubuntu
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Title:
  dhclient does not renew leases

Status in bind9 package in Ubuntu:
  Confirmed
Status in isc-dhcp package in Ubuntu:
  Confirmed
Status in bind9 source package in Xenial:
  Confirmed
Status in isc-dhcp source package in Xenial:
  Confirmed

Bug description:
  Release: Xenial

  I think this only recently started after some bind9 updates triggered a 
rebuild. When booting dhclient gets started and acquires an IP address, but it 
does seem to lock up somewhere as it does not renew the lease.
  In my environment I set the lease time to 5 minutes, so I notice such things 
rather soon. I looked on the dhcp server side but saw any further dhcp messages 
come in from the client side.

  Related bugs:
   * bug 1551415:  systemctl stop networking hang / timeout 

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: isc-dhcp-client 4.3.3-5ubuntu8
  ProcVersionSignature: Ubuntu 4.4.0-9.24-generic 4.4.3
  Uname: Linux 4.4.0-9-generic x86_64
  ApportVersion: 2.20-0ubuntu3
  Architecture: amd64
  Date: Mon Feb 29 12:32:52 2016
  DhclientLeases:

  SourcePackage: isc-dhcp
  UpgradeStatus: No upgrade log present (probably fresh install)

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[Touch-packages] [Bug 1551351] Re: dhclient does not renew leases

[Launchpad Bug Tracker]

This bug was fixed in the package bind9 - 1:9.10.3.dfsg.P4-3

---
bind9 (1:9.10.3.dfsg.P4-3) experimental; urgency=medium

  * Fix vcs links
  * build in debian/tmp, use bind9.install

 -- LaMont Jones   Fri, 18 Mar 2016 14:46:30 -0600

** Changed in: bind9 (Ubuntu Xenial)
   Status: Confirmed => Fix Released

-- 
You received this bug notification because you are a member of Ubuntu
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https://bugs.launchpad.net/bugs/1551351

Title:
  dhclient does not renew leases

Status in bind9 package in Ubuntu:
  Fix Released
Status in isc-dhcp package in Ubuntu:
  Fix Released
Status in bind9 source package in Xenial:
  Fix Released
Status in isc-dhcp source package in Xenial:
  Fix Released

Bug description:
  Release: Xenial

  I think this only recently started after some bind9 updates triggered a 
rebuild. When booting dhclient gets started and acquires an IP address, but it 
does seem to lock up somewhere as it does not renew the lease.
  In my environment I set the lease time to 5 minutes, so I notice such things 
rather soon. I looked on the dhcp server side but saw any further dhcp messages 
come in from the client side.

  Related bugs:
   * bug 1551415:  systemctl stop networking hang / timeout 

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: isc-dhcp-client 4.3.3-5ubuntu8
  ProcVersionSignature: Ubuntu 4.4.0-9.24-generic 4.4.3
  Uname: Linux 4.4.0-9-generic x86_64
  ApportVersion: 2.20-0ubuntu3
  Architecture: amd64
  Date: Mon Feb 29 12:32:52 2016
  DhclientLeases:

  SourcePackage: isc-dhcp
  UpgradeStatus: No upgrade log present (probably fresh install)

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[Touch-packages] [Bug 1551351] Re: dhclient does not renew leases

[Launchpad Bug Tracker]

This bug was fixed in the package isc-dhcp - 4.3.3-5ubuntu10

---
isc-dhcp (4.3.3-5ubuntu10) xenial; urgency=low

  [ Stefan Bader ]
  * Revert back to bind against bind9 export libraries
(LP: #1556175, LP: #1551351)

  [ LaMont Jones ]
  * libirs-export requires libisccfg-export now

 -- Stefan Bader   Thu, 17 Mar 2016 17:45:53
+0100

** Changed in: isc-dhcp (Ubuntu Xenial)
   Status: Confirmed => Fix Released

-- 
You received this bug notification because you are a member of Ubuntu
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https://bugs.launchpad.net/bugs/1551351

Title:
  dhclient does not renew leases

Status in bind9 package in Ubuntu:
  Confirmed
Status in isc-dhcp package in Ubuntu:
  Fix Released
Status in bind9 source package in Xenial:
  Confirmed
Status in isc-dhcp source package in Xenial:
  Fix Released

Bug description:
  Release: Xenial

  I think this only recently started after some bind9 updates triggered a 
rebuild. When booting dhclient gets started and acquires an IP address, but it 
does seem to lock up somewhere as it does not renew the lease.
  In my environment I set the lease time to 5 minutes, so I notice such things 
rather soon. I looked on the dhcp server side but saw any further dhcp messages 
come in from the client side.

  Related bugs:
   * bug 1551415:  systemctl stop networking hang / timeout 

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: isc-dhcp-client 4.3.3-5ubuntu8
  ProcVersionSignature: Ubuntu 4.4.0-9.24-generic 4.4.3
  Uname: Linux 4.4.0-9-generic x86_64
  ApportVersion: 2.20-0ubuntu3
  Architecture: amd64
  Date: Mon Feb 29 12:32:52 2016
  DhclientLeases:

  SourcePackage: isc-dhcp
  UpgradeStatus: No upgrade log present (probably fresh install)

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[Touch-packages] [Bug 1551351] Re: dhclient does not renew leases

[LaMont Jones]

The plan here is to restore the -export libraries for the time being,
until upstream finishes the dhcp changes that are needed to have the
common libs work.  This is in-progress.

-- 
You received this bug notification because you are a member of Ubuntu
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https://bugs.launchpad.net/bugs/1551351

Title:
  dhclient does not renew leases

Status in bind9 package in Ubuntu:
  Confirmed
Status in isc-dhcp package in Ubuntu:
  Confirmed
Status in bind9 source package in Xenial:
  Confirmed
Status in isc-dhcp source package in Xenial:
  Confirmed

Bug description:
  Release: Xenial

  I think this only recently started after some bind9 updates triggered a 
rebuild. When booting dhclient gets started and acquires an IP address, but it 
does seem to lock up somewhere as it does not renew the lease.
  In my environment I set the lease time to 5 minutes, so I notice such things 
rather soon. I looked on the dhcp server side but saw any further dhcp messages 
come in from the client side.

  Related bugs:
   * bug 1551415:  systemctl stop networking hang / timeout 

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: isc-dhcp-client 4.3.3-5ubuntu8
  ProcVersionSignature: Ubuntu 4.4.0-9.24-generic 4.4.3
  Uname: Linux 4.4.0-9-generic x86_64
  ApportVersion: 2.20-0ubuntu3
  Architecture: amd64
  Date: Mon Feb 29 12:32:52 2016
  DhclientLeases:

  SourcePackage: isc-dhcp
  UpgradeStatus: No upgrade log present (probably fresh install)

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[Touch-packages] [Bug 1551351] Re: dhclient does not renew leases

[Rob Whyte]

Since I am running dhclient -d eth0 I have not been disconnected.  I do
not intend to run dhclient this way, it is a part of the minimal system
and should work in the background with no intervention. Who is actively
working on this bug from Cannonical?

-- 
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to isc-dhcp in Ubuntu.
https://bugs.launchpad.net/bugs/1551351

Title:
  dhclient does not renew leases

Status in bind9 package in Ubuntu:
  Confirmed
Status in isc-dhcp package in Ubuntu:
  Confirmed
Status in bind9 source package in Xenial:
  Confirmed
Status in isc-dhcp source package in Xenial:
  Confirmed

Bug description:
  Release: Xenial

  I think this only recently started after some bind9 updates triggered a 
rebuild. When booting dhclient gets started and acquires an IP address, but it 
does seem to lock up somewhere as it does not renew the lease.
  In my environment I set the lease time to 5 minutes, so I notice such things 
rather soon. I looked on the dhcp server side but saw any further dhcp messages 
come in from the client side.

  Related bugs:
   * bug 1551415:  systemctl stop networking hang / timeout 

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: isc-dhcp-client 4.3.3-5ubuntu8
  ProcVersionSignature: Ubuntu 4.4.0-9.24-generic 4.4.3
  Uname: Linux 4.4.0-9-generic x86_64
  ApportVersion: 2.20-0ubuntu3
  Architecture: amd64
  Date: Mon Feb 29 12:32:52 2016
  DhclientLeases:

  SourcePackage: isc-dhcp
  UpgradeStatus: No upgrade log present (probably fresh install)

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[Touch-packages] [Bug 1551351] Re: dhclient does not renew leases

[Doug Smythies]

Correction 1: Stefan not Stephan, sorry.
Correction 2: Things broke down about another 1/2 day after the lease times 
changes to 1 hour. The client didn't seem to release this and resorted to 
broadcast type discover stuff. Then it was getting leases for 5 minutes, and 
the cycle continued until I re-booted.

-- 
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to isc-dhcp in Ubuntu.
https://bugs.launchpad.net/bugs/1551351

Title:
  dhclient does not renew leases

Status in bind9 package in Ubuntu:
  Confirmed
Status in isc-dhcp package in Ubuntu:
  Confirmed
Status in bind9 source package in Xenial:
  Confirmed
Status in isc-dhcp source package in Xenial:
  Confirmed

Bug description:
  Release: Xenial

  I think this only recently started after some bind9 updates triggered a 
rebuild. When booting dhclient gets started and acquires an IP address, but it 
does seem to lock up somewhere as it does not renew the lease.
  In my environment I set the lease time to 5 minutes, so I notice such things 
rather soon. I looked on the dhcp server side but saw any further dhcp messages 
come in from the client side.

  Related bugs:
   * bug 1551415:  systemctl stop networking hang / timeout 

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: isc-dhcp-client 4.3.3-5ubuntu8
  ProcVersionSignature: Ubuntu 4.4.0-9.24-generic 4.4.3
  Uname: Linux 4.4.0-9-generic x86_64
  ApportVersion: 2.20-0ubuntu3
  Architecture: amd64
  Date: Mon Feb 29 12:32:52 2016
  DhclientLeases:

  SourcePackage: isc-dhcp
  UpgradeStatus: No upgrade log present (probably fresh install)

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[Touch-packages] [Bug 1551351] Re: dhclient does not renew leases

[Doug Smythies]

>From Stephan comment 14:

"Hm, of course, if one starts dhclient in debug mode (foreground) by
adding a "-d", everything does work."

Yes, that does seem to work, but only for about another day, at least in
my case. Thereafter, my ISP stopped returning my domain name, host name
and some other stuff, and would only renew the lease for 1 hour instead
of the normal 1 day. I suppose it doesn't matter because, I use
supersede directives for that stuff anyhow. From my tcpdump captures, I
have not been able to determine what, if anything, is different in the
request, including the option parameter list request.

In my opinion, this bug report should have an importance level of
critical.

-- 
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to isc-dhcp in Ubuntu.
https://bugs.launchpad.net/bugs/1551351

Title:
  dhclient does not renew leases

Status in bind9 package in Ubuntu:
  Confirmed
Status in isc-dhcp package in Ubuntu:
  Confirmed
Status in bind9 source package in Xenial:
  Confirmed
Status in isc-dhcp source package in Xenial:
  Confirmed

Bug description:
  Release: Xenial

  I think this only recently started after some bind9 updates triggered a 
rebuild. When booting dhclient gets started and acquires an IP address, but it 
does seem to lock up somewhere as it does not renew the lease.
  In my environment I set the lease time to 5 minutes, so I notice such things 
rather soon. I looked on the dhcp server side but saw any further dhcp messages 
come in from the client side.

  Related bugs:
   * bug 1551415:  systemctl stop networking hang / timeout 

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: isc-dhcp-client 4.3.3-5ubuntu8
  ProcVersionSignature: Ubuntu 4.4.0-9.24-generic 4.4.3
  Uname: Linux 4.4.0-9-generic x86_64
  ApportVersion: 2.20-0ubuntu3
  Architecture: amd64
  Date: Mon Feb 29 12:32:52 2016
  DhclientLeases:

  SourcePackage: isc-dhcp
  UpgradeStatus: No upgrade log present (probably fresh install)

To manage notifications about this bug go to:
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[Touch-packages] [Bug 1551351] Re: dhclient does not renew leases

[Harry]

I have tested this bug this way.

1) With the newest setup with all upgrades installed (Ubuntu Gnome)
there is 6-8 sec slow down when shutting down or rebooting. No delay at
start up.

2) I then downgraded the package isc-dhcp-client (4.3.3-5ubuntu9) to
isc-dhcp-client (4.3.3-5ubuunutu5). Also the packages libdns-export100
and libisc-export95 (both 9.9.5.dfsg-12.1ubuntu1) must be installed.

3) After one reboot (RAM) there is no more delays when shutting down or
rebooting.

Note, that the bug appeared right after isc-dhcp-client (4.3.3-5ubuntu7)
was installed on 19th February.

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Title:
  dhclient does not renew leases

Status in bind9 package in Ubuntu:
  Confirmed
Status in isc-dhcp package in Ubuntu:
  Confirmed
Status in bind9 source package in Xenial:
  Confirmed
Status in isc-dhcp source package in Xenial:
  Confirmed

Bug description:
  Release: Xenial

  I think this only recently started after some bind9 updates triggered a 
rebuild. When booting dhclient gets started and acquires an IP address, but it 
does seem to lock up somewhere as it does not renew the lease.
  In my environment I set the lease time to 5 minutes, so I notice such things 
rather soon. I looked on the dhcp server side but saw any further dhcp messages 
come in from the client side.

  Related bugs:
   * bug 1551415:  systemctl stop networking hang / timeout 

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: isc-dhcp-client 4.3.3-5ubuntu8
  ProcVersionSignature: Ubuntu 4.4.0-9.24-generic 4.4.3
  Uname: Linux 4.4.0-9-generic x86_64
  ApportVersion: 2.20-0ubuntu3
  Architecture: amd64
  Date: Mon Feb 29 12:32:52 2016
  DhclientLeases:

  SourcePackage: isc-dhcp
  UpgradeStatus: No upgrade log present (probably fresh install)

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[Touch-packages] [Bug 1551351] Re: dhclient does not renew leases

[Robie Basak]

** Changed in: bind9 (Ubuntu Xenial)
Milestone: None => ubuntu-16.04

** Changed in: isc-dhcp (Ubuntu Xenial)
Milestone: None => ubuntu-16.04

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Title:
  dhclient does not renew leases

Status in bind9 package in Ubuntu:
  Confirmed
Status in isc-dhcp package in Ubuntu:
  Confirmed
Status in bind9 source package in Xenial:
  Confirmed
Status in isc-dhcp source package in Xenial:
  Confirmed

Bug description:
  Release: Xenial

  I think this only recently started after some bind9 updates triggered a 
rebuild. When booting dhclient gets started and acquires an IP address, but it 
does seem to lock up somewhere as it does not renew the lease.
  In my environment I set the lease time to 5 minutes, so I notice such things 
rather soon. I looked on the dhcp server side but saw any further dhcp messages 
come in from the client side.

  Related bugs:
   * bug 1551415:  systemctl stop networking hang / timeout 

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: isc-dhcp-client 4.3.3-5ubuntu8
  ProcVersionSignature: Ubuntu 4.4.0-9.24-generic 4.4.3
  Uname: Linux 4.4.0-9-generic x86_64
  ApportVersion: 2.20-0ubuntu3
  Architecture: amd64
  Date: Mon Feb 29 12:32:52 2016
  DhclientLeases:

  SourcePackage: isc-dhcp
  UpgradeStatus: No upgrade log present (probably fresh install)

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[Touch-packages] [Bug 1551351] Re: dhclient does not renew leases

[Stefan Bader]

I believe I got a vague feeling about what is going wrong. So the isc
library which now is shared for bind9 and dhcp is compiled (because
bind9 is rather wanted that way) with threads enabled. Before that the
export version of the library was not. So an isc_app which dhclient
creates and runs was more or less a loop handling events. Now this
creates a series of threads.

The problem looks to be that dhclient (and probably dhcpd, too) set up
the isc_app context and then do a fork() (in daemon mode). The man page
of fork() clearly states that the child will be single threaded. So when
dhclient calls dispatch() to run the isc_app this probably only runs a
single control loop more or less waiting for the threads (which do not
run, maybe not even exist anymore) to do the work.

The signal handling might be related to that as well. With threads only
one of them should handle signals and somehow synchronize with the rest.
Maybe the new library is not handling that correctly. Since this does
not work regardless of running as daemon or not. But I have not
understood all the details there.

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https://bugs.launchpad.net/bugs/1551351

Title:
  dhclient does not renew leases

Status in bind9 package in Ubuntu:
  Confirmed
Status in isc-dhcp package in Ubuntu:
  Confirmed
Status in bind9 source package in Xenial:
  Confirmed
Status in isc-dhcp source package in Xenial:
  Confirmed

Bug description:
  Release: Xenial

  I think this only recently started after some bind9 updates triggered a 
rebuild. When booting dhclient gets started and acquires an IP address, but it 
does seem to lock up somewhere as it does not renew the lease.
  In my environment I set the lease time to 5 minutes, so I notice such things 
rather soon. I looked on the dhcp server side but saw any further dhcp messages 
come in from the client side.

  Related bugs:
   * bug 1551415:  systemctl stop networking hang / timeout 

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: isc-dhcp-client 4.3.3-5ubuntu8
  ProcVersionSignature: Ubuntu 4.4.0-9.24-generic 4.4.3
  Uname: Linux 4.4.0-9-generic x86_64
  ApportVersion: 2.20-0ubuntu3
  Architecture: amd64
  Date: Mon Feb 29 12:32:52 2016
  DhclientLeases:

  SourcePackage: isc-dhcp
  UpgradeStatus: No upgrade log present (probably fresh install)

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[Touch-packages] [Bug 1551351] Re: dhclient does not renew leases

[Stefan Bader]

So maybe we should un-duplicate bug 1551415 as not acting on SIGHUP
likely is something that could be different and also affect the network-
manager case. I think I saw some comment there about shutdown/reboot
times being increased. The problem of not keeping leases active is
limited to systems using ifup/-down (or anything that starts dhclient in
daemon mode).

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https://bugs.launchpad.net/bugs/1551351

Title:
  dhclient does not renew leases

Status in bind9 package in Ubuntu:
  Confirmed
Status in isc-dhcp package in Ubuntu:
  Confirmed
Status in bind9 source package in Xenial:
  Confirmed
Status in isc-dhcp source package in Xenial:
  Confirmed

Bug description:
  Release: Xenial

  I think this only recently started after some bind9 updates triggered a 
rebuild. When booting dhclient gets started and acquires an IP address, but it 
does seem to lock up somewhere as it does not renew the lease.
  In my environment I set the lease time to 5 minutes, so I notice such things 
rather soon. I looked on the dhcp server side but saw any further dhcp messages 
come in from the client side.

  Related bugs:
   * bug 1551415:  systemctl stop networking hang / timeout 

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: isc-dhcp-client 4.3.3-5ubuntu8
  ProcVersionSignature: Ubuntu 4.4.0-9.24-generic 4.4.3
  Uname: Linux 4.4.0-9-generic x86_64
  ApportVersion: 2.20-0ubuntu3
  Architecture: amd64
  Date: Mon Feb 29 12:32:52 2016
  DhclientLeases:

  SourcePackage: isc-dhcp
  UpgradeStatus: No upgrade log present (probably fresh install)

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[Touch-packages] [Bug 1551351] Re: dhclient does not renew leases

[Stefan Bader]

Hm, of course, if one starts dhclient in debug mode (foreground) by adding a 
"-d", everything does work. :/ Interestingly when I attach to it with strace, I 
see "strace: Process  attached with 4 threads". The foreground process 
does not act on ctrl-c which at least is consistent with the broken behaviour.
When not working (in the background) strace will not find/report any threads 
running. The other thing to note (it was mentioned before) is that looking at 
/proc//fd the process has a file handle for the lease file, but looking at 
the time stamps it does not get updated. Likely because that is something that 
one of the threads would do.
This also explains why dhclient under network-manager control works. 
Network-manager starts it in foreground/debug mode (with -d).

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You received this bug notification because you are a member of Ubuntu
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https://bugs.launchpad.net/bugs/1551351

Title:
  dhclient does not renew leases

Status in bind9 package in Ubuntu:
  Confirmed
Status in isc-dhcp package in Ubuntu:
  Confirmed
Status in bind9 source package in Xenial:
  Confirmed
Status in isc-dhcp source package in Xenial:
  Confirmed

Bug description:
  Release: Xenial

  I think this only recently started after some bind9 updates triggered a 
rebuild. When booting dhclient gets started and acquires an IP address, but it 
does seem to lock up somewhere as it does not renew the lease.
  In my environment I set the lease time to 5 minutes, so I notice such things 
rather soon. I looked on the dhcp server side but saw any further dhcp messages 
come in from the client side.

  Related bugs:
   * bug 1551415:  systemctl stop networking hang / timeout 

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: isc-dhcp-client 4.3.3-5ubuntu8
  ProcVersionSignature: Ubuntu 4.4.0-9.24-generic 4.4.3
  Uname: Linux 4.4.0-9-generic x86_64
  ApportVersion: 2.20-0ubuntu3
  Architecture: amd64
  Date: Mon Feb 29 12:32:52 2016
  DhclientLeases:

  SourcePackage: isc-dhcp
  UpgradeStatus: No upgrade log present (probably fresh install)

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[Touch-packages] [Bug 1551351] Re: dhclient does not renew leases

[Stefan Bader]

For more data points on this, someone mentioned today that for him the
leases get renewed (with dhclient started by network-manager).  The
command line is slightly different there:

/sbin/dhclient -d -q -sf  -pf  -lf 
-cf  

while on an ifupdown system where I see the stall it is:

/sbin/dhclient -1 -v -pf  -lf  -I -df  

though it is the same command line used for ifupdown before. I got another 
Xenial/ifupdown based VM which was not recently updated (so leases get renewed 
still). I was able to attach to the daemon with "strace -p  -ff" and could 
see that the main thread is in "select(7, [5 6], [], NULL, {276, 557923}". But 
there is other activity as well from time to time.
On the broken system the dhclient main thread is in "futex(0x7fb54906b0a4, 
FUTEX_WAIT_PRIVATE, 5, NULL" and there is no other activity. As a result the 
lease gets dropped which I can see on the server side as that is configured to 
do DNS updates when DHCP leases become active or inactive.

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https://bugs.launchpad.net/bugs/1551351

Title:
  dhclient does not renew leases

Status in bind9 package in Ubuntu:
  Confirmed
Status in isc-dhcp package in Ubuntu:
  Confirmed
Status in bind9 source package in Xenial:
  Confirmed
Status in isc-dhcp source package in Xenial:
  Confirmed

Bug description:
  Release: Xenial

  I think this only recently started after some bind9 updates triggered a 
rebuild. When booting dhclient gets started and acquires an IP address, but it 
does seem to lock up somewhere as it does not renew the lease.
  In my environment I set the lease time to 5 minutes, so I notice such things 
rather soon. I looked on the dhcp server side but saw any further dhcp messages 
come in from the client side.

  Related bugs:
   * bug 1551415:  systemctl stop networking hang / timeout 

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: isc-dhcp-client 4.3.3-5ubuntu8
  ProcVersionSignature: Ubuntu 4.4.0-9.24-generic 4.4.3
  Uname: Linux 4.4.0-9-generic x86_64
  ApportVersion: 2.20-0ubuntu3
  Architecture: amd64
  Date: Mon Feb 29 12:32:52 2016
  DhclientLeases:

  SourcePackage: isc-dhcp
  UpgradeStatus: No upgrade log present (probably fresh install)

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[Touch-packages] [Bug 1551351] Re: dhclient does not renew leases

[Stefan Bader]

** Also affects: bind9 (Ubuntu)
   Importance: Undecided
   Status: New

** Changed in: bind9 (Ubuntu Xenial)
   Status: New => Confirmed

** Changed in: bind9 (Ubuntu Xenial)
   Importance: Undecided => High

-- 
You received this bug notification because you are a member of Ubuntu
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https://bugs.launchpad.net/bugs/1551351

Title:
  dhclient does not renew leases

Status in bind9 package in Ubuntu:
  Confirmed
Status in isc-dhcp package in Ubuntu:
  Confirmed
Status in bind9 source package in Xenial:
  Confirmed
Status in isc-dhcp source package in Xenial:
  Confirmed

Bug description:
  Release: Xenial

  I think this only recently started after some bind9 updates triggered a 
rebuild. When booting dhclient gets started and acquires an IP address, but it 
does seem to lock up somewhere as it does not renew the lease.
  In my environment I set the lease time to 5 minutes, so I notice such things 
rather soon. I looked on the dhcp server side but saw any further dhcp messages 
come in from the client side.

  Related bugs:
   * bug 1551415:  systemctl stop networking hang / timeout 

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: isc-dhcp-client 4.3.3-5ubuntu8
  ProcVersionSignature: Ubuntu 4.4.0-9.24-generic 4.4.3
  Uname: Linux 4.4.0-9-generic x86_64
  ApportVersion: 2.20-0ubuntu3
  Architecture: amd64
  Date: Mon Feb 29 12:32:52 2016
  DhclientLeases:

  SourcePackage: isc-dhcp
  UpgradeStatus: No upgrade log present (probably fresh install)

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[Touch-packages] [Bug 1551351] Re: dhclient does not renew leases

[Stefan Bader]

Looking at the changelog history of bind9, the change to 9.10 looks to
be older (around December last year) but then only a recent upload to
isc-dhcp mentions "Link with the non-export bind9 libraries". Which I
think we can assume is what causes the problem. That went to the archive
around noon on Feb-28th which would match my time-line of noticing it.

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Title:
  dhclient does not renew leases

Status in isc-dhcp package in Ubuntu:
  Confirmed
Status in isc-dhcp source package in Xenial:
  Confirmed

Bug description:
  Release: Xenial

  I think this only recently started after some bind9 updates triggered a 
rebuild. When booting dhclient gets started and acquires an IP address, but it 
does seem to lock up somewhere as it does not renew the lease.
  In my environment I set the lease time to 5 minutes, so I notice such things 
rather soon. I looked on the dhcp server side but saw any further dhcp messages 
come in from the client side.

  Related bugs:
   * bug 1551415:  systemctl stop networking hang / timeout 

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: isc-dhcp-client 4.3.3-5ubuntu8
  ProcVersionSignature: Ubuntu 4.4.0-9.24-generic 4.4.3
  Uname: Linux 4.4.0-9-generic x86_64
  ApportVersion: 2.20-0ubuntu3
  Architecture: amd64
  Date: Mon Feb 29 12:32:52 2016
  DhclientLeases:

  SourcePackage: isc-dhcp
  UpgradeStatus: No upgrade log present (probably fresh install)

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[Touch-packages] [Bug 1551351] Re: dhclient does not renew leases

[Stefan Bader]

@Dough, yes, so basically did not renew but obtained a new lease (which
sensibly is the same IP as before). And while the dhcp server still
wonders why a client ask for some IP _again_, it also silently marks the
lease time as extended for another period. And since the old clients do
not die (but play dead), you accumulate a new copy every time you run it
(including the initial one).

@Seth, thanks for the link. Reading through it I think it is not only
potentially but very much the problem we got. The upload of isc-dhcp
that started the breakage was very likely the one "no change rebuild"
that was done after upgrading to bind9(.19).

Sounds like one needs to manually twiddle the build back so isc-dhcp
gets a bind9 lib that has threads and epoll disabled (as a work-around).
Not sure how quickly that can be done. This may still have problems on
terminating the process, so maybe needs adaptation of ifdown hooks as
well. But that needs to be seen. First goal is to get dhclient/-server
back working.

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You received this bug notification because you are a member of Ubuntu
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https://bugs.launchpad.net/bugs/1551351

Title:
  dhclient does not renew leases

Status in isc-dhcp package in Ubuntu:
  Confirmed
Status in isc-dhcp source package in Xenial:
  Confirmed

Bug description:
  Release: Xenial

  I think this only recently started after some bind9 updates triggered a 
rebuild. When booting dhclient gets started and acquires an IP address, but it 
does seem to lock up somewhere as it does not renew the lease.
  In my environment I set the lease time to 5 minutes, so I notice such things 
rather soon. I looked on the dhcp server side but saw any further dhcp messages 
come in from the client side.

  Related bugs:
   * bug 1551415:  systemctl stop networking hang / timeout 

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: isc-dhcp-client 4.3.3-5ubuntu8
  ProcVersionSignature: Ubuntu 4.4.0-9.24-generic 4.4.3
  Uname: Linux 4.4.0-9-generic x86_64
  ApportVersion: 2.20-0ubuntu3
  Architecture: amd64
  Date: Mon Feb 29 12:32:52 2016
  DhclientLeases:

  SourcePackage: isc-dhcp
  UpgradeStatus: No upgrade log present (probably fresh install)

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[Touch-packages] [Bug 1551351] Re: dhclient does not renew leases

[Seth Arnold]

Potentially related https://lists.isc.org/pipermail/bind-
users/2015-February/094637.html

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https://bugs.launchpad.net/bugs/1551351

Title:
  dhclient does not renew leases

Status in isc-dhcp package in Ubuntu:
  Confirmed
Status in isc-dhcp source package in Xenial:
  Confirmed

Bug description:
  Release: Xenial

  I think this only recently started after some bind9 updates triggered a 
rebuild. When booting dhclient gets started and acquires an IP address, but it 
does seem to lock up somewhere as it does not renew the lease.
  In my environment I set the lease time to 5 minutes, so I notice such things 
rather soon. I looked on the dhcp server side but saw any further dhcp messages 
come in from the client side.

  Related bugs:
   * bug 1551415:  systemctl stop networking hang / timeout 

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: isc-dhcp-client 4.3.3-5ubuntu8
  ProcVersionSignature: Ubuntu 4.4.0-9.24-generic 4.4.3
  Uname: Linux 4.4.0-9-generic x86_64
  ApportVersion: 2.20-0ubuntu3
  Architecture: amd64
  Date: Mon Feb 29 12:32:52 2016
  DhclientLeases:

  SourcePackage: isc-dhcp
  UpgradeStatus: No upgrade log present (probably fresh install)

To manage notifications about this bug go to:
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[Touch-packages] [Bug 1551351] Re: dhclient does not renew leases

[Doug Smythies]

Stefan, I think the answer is yes. Just a few minutes before my lease was going 
to expire, I did: "sudo dhclient enp4s0"
However, I didn't notice any change in the leases file, so I expected internet 
it to stop working after the expire time, but it didn't stop working. So I 
looked at my tcpdump captures and realized  that the lease was granted, it just 
didn't update the leases file.

I never killed anything first, and dhclient is still running... Oh,
crap, I see I now have a bunch of dhclients running.

doug@DOUG-64:~$ ps aux | grep dhcl
root  1049  0.0  0.0 181364  2808 ?Ss   Feb29   0:00 /sbin/dhclient 
-1 -v -pf /run/dhclient.enp4s0.pid -lf /var/lib/dhcp/dhclient.enp4s0.leases -I 
-df /var/lib/dhcp/dhclient6.enp4s0.leases enp4s0
root  7008  0.0  0.0 181364  2796 ?Ss   07:34   0:00 dhclient enp4s0
root  7368  0.0  0.0 181364  2744 ?Ss   08:01   0:00 dhclient enp4s0
root  7616  0.0  0.0 181364  2688 ?Ss   08:36   0:00 dhclient enp4s0
root  7810  0.0  0.0 181364  2816 ?Ss   08:36   0:00 dhclient enp4s0

I was just trying to avoid having a gap in internet access. I don't
really want to do the ifdown && ifup method if I can avoid it.

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https://bugs.launchpad.net/bugs/1551351

Title:
  dhclient does not renew leases

Status in isc-dhcp package in Ubuntu:
  Confirmed
Status in isc-dhcp source package in Xenial:
  Confirmed

Bug description:
  Release: Xenial

  I think this only recently started after some bind9 updates triggered a 
rebuild. When booting dhclient gets started and acquires an IP address, but it 
does seem to lock up somewhere as it does not renew the lease.
  In my environment I set the lease time to 5 minutes, so I notice such things 
rather soon. I looked on the dhcp server side but saw any further dhcp messages 
come in from the client side.

  Related bugs:
   * bug 1551415:  systemctl stop networking hang / timeout 

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: isc-dhcp-client 4.3.3-5ubuntu8
  ProcVersionSignature: Ubuntu 4.4.0-9.24-generic 4.4.3
  Uname: Linux 4.4.0-9-generic x86_64
  ApportVersion: 2.20-0ubuntu3
  Architecture: amd64
  Date: Mon Feb 29 12:32:52 2016
  DhclientLeases:

  SourcePackage: isc-dhcp
  UpgradeStatus: No upgrade log present (probably fresh install)

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[Touch-packages] [Bug 1551351] Re: dhclient does not renew leases

[Stefan Bader]

Doug, was that granted when running dhclient manually? Which would be the 
initial lease case. When I looked at this last one would get a new lease 
whenever dhclient got started (once). Same would happen if one killed the 
daemon (-11) and then did an ifdown && ifup. If there is a means of having a 
session without network (like vnc/spice screen of a VM or serial over lan).
The dhcp server did not log any requests after the initial one.

Jamie, maybe. A quick check could be cat /proc//stack (as
root).

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https://bugs.launchpad.net/bugs/1551351

Title:
  dhclient does not renew leases

Status in isc-dhcp package in Ubuntu:
  Confirmed
Status in isc-dhcp source package in Xenial:
  Confirmed

Bug description:
  Release: Xenial

  I think this only recently started after some bind9 updates triggered a 
rebuild. When booting dhclient gets started and acquires an IP address, but it 
does seem to lock up somewhere as it does not renew the lease.
  In my environment I set the lease time to 5 minutes, so I notice such things 
rather soon. I looked on the dhcp server side but saw any further dhcp messages 
come in from the client side.

  Related bugs:
   * bug 1551415:  systemctl stop networking hang / timeout 

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: isc-dhcp-client 4.3.3-5ubuntu8
  ProcVersionSignature: Ubuntu 4.4.0-9.24-generic 4.4.3
  Uname: Linux 4.4.0-9-generic x86_64
  ApportVersion: 2.20-0ubuntu3
  Architecture: amd64
  Date: Mon Feb 29 12:32:52 2016
  DhclientLeases:

  SourcePackage: isc-dhcp
  UpgradeStatus: No upgrade log present (probably fresh install)

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[Touch-packages] [Bug 1551351] Re: dhclient does not renew leases

[Doug Smythies]

Well, that one got set as a duplicate of this one. Please see also bug
#1551415.

I did manage to avoid having to re-boot, via the Rob Whyte method "sudo
dhclient eth0", however my leases file is now out of date, but I did
observe a new lease actually being granted via capturing the packets on
tcpdump.

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You received this bug notification because you are a member of Ubuntu
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https://bugs.launchpad.net/bugs/1551351

Title:
  dhclient does not renew leases

Status in isc-dhcp package in Ubuntu:
  Confirmed
Status in isc-dhcp source package in Xenial:
  Confirmed

Bug description:
  Release: Xenial

  I think this only recently started after some bind9 updates triggered a 
rebuild. When booting dhclient gets started and acquires an IP address, but it 
does seem to lock up somewhere as it does not renew the lease.
  In my environment I set the lease time to 5 minutes, so I notice such things 
rather soon. I looked on the dhcp server side but saw any further dhcp messages 
come in from the client side.

  Related bugs:
   * bug 1551415:  systemctl stop networking hang / timeout 

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: isc-dhcp-client 4.3.3-5ubuntu8
  ProcVersionSignature: Ubuntu 4.4.0-9.24-generic 4.4.3
  Uname: Linux 4.4.0-9-generic x86_64
  ApportVersion: 2.20-0ubuntu3
  Architecture: amd64
  Date: Mon Feb 29 12:32:52 2016
  DhclientLeases:

  SourcePackage: isc-dhcp
  UpgradeStatus: No upgrade log present (probably fresh install)

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[Touch-packages] [Bug 1551351] Re: dhclient does not renew leases

[Jamie Strandboge]

FYI, I just filed 1551855 for dhcpd not stopping when sent the TERM
signal. If Stephan's observation that dhclient is in a futex wait, I
wonder if the dhcpd server not stopping is suffering from a similar
wait.

-- 
You received this bug notification because you are a member of Ubuntu
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https://bugs.launchpad.net/bugs/1551351

Title:
  dhclient does not renew leases

Status in isc-dhcp package in Ubuntu:
  Confirmed
Status in isc-dhcp source package in Xenial:
  Confirmed

Bug description:
  Release: Xenial

  I think this only recently started after some bind9 updates triggered a 
rebuild. When booting dhclient gets started and acquires an IP address, but it 
does seem to lock up somewhere as it does not renew the lease.
  In my environment I set the lease time to 5 minutes, so I notice such things 
rather soon. I looked on the dhcp server side but saw any further dhcp messages 
come in from the client side.

  Related bugs:
   * bug 1551415:  systemctl stop networking hang / timeout 

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: isc-dhcp-client 4.3.3-5ubuntu8
  ProcVersionSignature: Ubuntu 4.4.0-9.24-generic 4.4.3
  Uname: Linux 4.4.0-9-generic x86_64
  ApportVersion: 2.20-0ubuntu3
  Architecture: amd64
  Date: Mon Feb 29 12:32:52 2016
  DhclientLeases:

  SourcePackage: isc-dhcp
  UpgradeStatus: No upgrade log present (probably fresh install)

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[Touch-packages] [Bug 1551351] Re: dhclient does not renew leases

[Brian Murray]

** Changed in: isc-dhcp (Ubuntu)
   Importance: Undecided => High

** Also affects: isc-dhcp (Ubuntu Xenial)
   Importance: High
   Status: Confirmed

-- 
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to isc-dhcp in Ubuntu.
https://bugs.launchpad.net/bugs/1551351

Title:
  dhclient does not renew leases

Status in isc-dhcp package in Ubuntu:
  Confirmed
Status in isc-dhcp source package in Xenial:
  Confirmed

Bug description:
  Release: Xenial

  I think this only recently started after some bind9 updates triggered a 
rebuild. When booting dhclient gets started and acquires an IP address, but it 
does seem to lock up somewhere as it does not renew the lease.
  In my environment I set the lease time to 5 minutes, so I notice such things 
rather soon. I looked on the dhcp server side but saw any further dhcp messages 
come in from the client side.

  Related bugs:
   * bug 1551415:  systemctl stop networking hang / timeout 

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: isc-dhcp-client 4.3.3-5ubuntu8
  ProcVersionSignature: Ubuntu 4.4.0-9.24-generic 4.4.3
  Uname: Linux 4.4.0-9-generic x86_64
  ApportVersion: 2.20-0ubuntu3
  Architecture: amd64
  Date: Mon Feb 29 12:32:52 2016
  DhclientLeases:

  SourcePackage: isc-dhcp
  UpgradeStatus: No upgrade log present (probably fresh install)

To manage notifications about this bug go to:
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[Touch-packages] [Bug 1551351] Re: dhclient does not renew leases

[Scott Moser]

** Description changed:

  Release: Xenial
  
  I think this only recently started after some bind9 updates triggered a 
rebuild. When booting dhclient gets started and acquires an IP address, but it 
does seem to lock up somewhere as it does not renew the lease.
  In my environment I set the lease time to 5 minutes, so I notice such things 
rather soon. I looked on the dhcp server side but saw any further dhcp messages 
come in from the client side.
+ 
+ Related bugs:
+  * bug 1551415:  systemctl stop networking hang / timeout 
  
  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: isc-dhcp-client 4.3.3-5ubuntu8
  ProcVersionSignature: Ubuntu 4.4.0-9.24-generic 4.4.3
  Uname: Linux 4.4.0-9-generic x86_64
  ApportVersion: 2.20-0ubuntu3
  Architecture: amd64
  Date: Mon Feb 29 12:32:52 2016
  DhclientLeases:
-  
+ 
  SourcePackage: isc-dhcp
  UpgradeStatus: No upgrade log present (probably fresh install)

-- 
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to isc-dhcp in Ubuntu.
https://bugs.launchpad.net/bugs/1551351

Title:
  dhclient does not renew leases

Status in isc-dhcp package in Ubuntu:
  Confirmed

Bug description:
  Release: Xenial

  I think this only recently started after some bind9 updates triggered a 
rebuild. When booting dhclient gets started and acquires an IP address, but it 
does seem to lock up somewhere as it does not renew the lease.
  In my environment I set the lease time to 5 minutes, so I notice such things 
rather soon. I looked on the dhcp server side but saw any further dhcp messages 
come in from the client side.

  Related bugs:
   * bug 1551415:  systemctl stop networking hang / timeout 

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: isc-dhcp-client 4.3.3-5ubuntu8
  ProcVersionSignature: Ubuntu 4.4.0-9.24-generic 4.4.3
  Uname: Linux 4.4.0-9-generic x86_64
  ApportVersion: 2.20-0ubuntu3
  Architecture: amd64
  Date: Mon Feb 29 12:32:52 2016
  DhclientLeases:

  SourcePackage: isc-dhcp
  UpgradeStatus: No upgrade log present (probably fresh install)

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/isc-dhcp/+bug/1551351/+subscriptions

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[Touch-packages] [Bug 1551351] Re: dhclient does not renew leases

[Rob Whyte]

I too have struggled with this on my server, leaving us without internet
until sudo dhclient eth0 or the interace is taken down and brought back
up.

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You received this bug notification because you are a member of Ubuntu
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https://bugs.launchpad.net/bugs/1551351

Title:
  dhclient does not renew leases

Status in isc-dhcp package in Ubuntu:
  Confirmed

Bug description:
  Release: Xenial

  I think this only recently started after some bind9 updates triggered a 
rebuild. When booting dhclient gets started and acquires an IP address, but it 
does seem to lock up somewhere as it does not renew the lease.
  In my environment I set the lease time to 5 minutes, so I notice such things 
rather soon. I looked on the dhcp server side but saw any further dhcp messages 
come in from the client side.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: isc-dhcp-client 4.3.3-5ubuntu8
  ProcVersionSignature: Ubuntu 4.4.0-9.24-generic 4.4.3
  Uname: Linux 4.4.0-9-generic x86_64
  ApportVersion: 2.20-0ubuntu3
  Architecture: amd64
  Date: Mon Feb 29 12:32:52 2016
  DhclientLeases:
   
  SourcePackage: isc-dhcp
  UpgradeStatus: No upgrade log present (probably fresh install)

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/isc-dhcp/+bug/1551351/+subscriptions

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[Touch-packages] [Bug 1551351] Re: dhclient does not renew leases

[Doug Smythies]

This occurs also on my server, and as of two days ago.

My system is not renewing the lease of its IP address from my ISP.
(while I have static IP adresses, my ISP still requires using dhcp). The
expire time is 24 hours, and exactly 24 hours since my last re-boot,
internet stopped working. Confirmed again after another 24 hours, but
this time I was watching for it.

-- 
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to isc-dhcp in Ubuntu.
https://bugs.launchpad.net/bugs/1551351

Title:
  dhclient does not renew leases

Status in isc-dhcp package in Ubuntu:
  Confirmed

Bug description:
  Release: Xenial

  I think this only recently started after some bind9 updates triggered a 
rebuild. When booting dhclient gets started and acquires an IP address, but it 
does seem to lock up somewhere as it does not renew the lease.
  In my environment I set the lease time to 5 minutes, so I notice such things 
rather soon. I looked on the dhcp server side but saw any further dhcp messages 
come in from the client side.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: isc-dhcp-client 4.3.3-5ubuntu8
  ProcVersionSignature: Ubuntu 4.4.0-9.24-generic 4.4.3
  Uname: Linux 4.4.0-9-generic x86_64
  ApportVersion: 2.20-0ubuntu3
  Architecture: amd64
  Date: Mon Feb 29 12:32:52 2016
  DhclientLeases:
   
  SourcePackage: isc-dhcp
  UpgradeStatus: No upgrade log present (probably fresh install)

To manage notifications about this bug go to:
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[Touch-packages] [Bug 1551351] Re: dhclient does not renew leases

[Launchpad Bug Tracker]

Status changed to 'Confirmed' because the bug affects multiple users.

** Changed in: isc-dhcp (Ubuntu)
   Status: New => Confirmed

-- 
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to isc-dhcp in Ubuntu.
https://bugs.launchpad.net/bugs/1551351

Title:
  dhclient does not renew leases

Status in isc-dhcp package in Ubuntu:
  Confirmed

Bug description:
  Release: Xenial

  I think this only recently started after some bind9 updates triggered a 
rebuild. When booting dhclient gets started and acquires an IP address, but it 
does seem to lock up somewhere as it does not renew the lease.
  In my environment I set the lease time to 5 minutes, so I notice such things 
rather soon. I looked on the dhcp server side but saw any further dhcp messages 
come in from the client side.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: isc-dhcp-client 4.3.3-5ubuntu8
  ProcVersionSignature: Ubuntu 4.4.0-9.24-generic 4.4.3
  Uname: Linux 4.4.0-9-generic x86_64
  ApportVersion: 2.20-0ubuntu3
  Architecture: amd64
  Date: Mon Feb 29 12:32:52 2016
  DhclientLeases:
   
  SourcePackage: isc-dhcp
  UpgradeStatus: No upgrade log present (probably fresh install)

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/isc-dhcp/+bug/1551351/+subscriptions

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[Touch-packages] [Bug 1551351] Re: dhclient does not renew leases

[Stefan Bader]

As far as I can see, the dhclient process seems to be in some futex
wait...

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https://bugs.launchpad.net/bugs/1551351

Title:
  dhclient does not renew leases

Status in isc-dhcp package in Ubuntu:
  New

Bug description:
  Release: Xenial

  I think this only recently started after some bind9 updates triggered a 
rebuild. When booting dhclient gets started and acquires an IP address, but it 
does seem to lock up somewhere as it does not renew the lease.
  In my environment I set the lease time to 5 minutes, so I notice such things 
rather soon. I looked on the dhcp server side but saw any further dhcp messages 
come in from the client side.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: isc-dhcp-client 4.3.3-5ubuntu8
  ProcVersionSignature: Ubuntu 4.4.0-9.24-generic 4.4.3
  Uname: Linux 4.4.0-9-generic x86_64
  ApportVersion: 2.20-0ubuntu3
  Architecture: amd64
  Date: Mon Feb 29 12:32:52 2016
  DhclientLeases:
   
  SourcePackage: isc-dhcp
  UpgradeStatus: No upgrade log present (probably fresh install)

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/isc-dhcp/+bug/1551351/+subscriptions

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