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]: <info> [1485220632.3687] address 10.0.0.6 Jan 24 03:17:12 kubuntu NetworkManager[1132]: <info> [1485220632.3957] plen 24 (255.255.255.0) Jan 24 03:17:12 kubuntu NetworkManager[1132]: <info> [1485220632.3957] gateway 10.0.0.200 Jan 24 03:17:12 kubuntu NetworkManager[1132]: <info> [1485220632.3957] server identifier 10.0.0.200 Jan 24 03:17:12 kubuntu NetworkManager[1132]: <info> [1485220632.3958] lease time 86400 Jan 24 03:17:12 kubuntu NetworkManager[1132]: <info> [1485220632.3958] hostname 'kubuntu' Jan 24 03:17:12 kubuntu NetworkManager[1132]: <info> [1485220632.3958] nameserver '8.8.8.8' Jan 24 03:17:12 kubuntu NetworkManager[1132]: <info> [1485220632.3958] nameserver '10.0.0.200' Jan 24 03:17:12 kubuntu NetworkManager[1132]: <info> [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: https://bugs.launchpad.net/ubuntu/+source/bind9/+bug/1551351/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp