Thank you for taking the time to report this issue and helping to make
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not appear to be a bug report so we are closing it and converting it to
a question in the support tracker. We appreciate the difficulties you
are facing, but it would make more sense to raise problems you are
having in the support tracker at https://answers.launchpad.net/ubuntu if
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** Package changed: ubuntu => network-manager (Ubuntu)
** Changed in: network-manager (Ubuntu)
Status: New => Invalid
** Converted to question:
https://answers.launchpad.net/ubuntu/+source/network-manager/+question/233515
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https://bugs.launchpad.net/bugs/1019614
Title:
Installing Ubuntu with network disconnected causes major network
issues
Status in “network-manager” package in Ubuntu:
Invalid
Bug description:
I installed Ubuntu Server 12.04 i386 with no network connected to the
computer; the network chipset was however properly found and
installed.
After the successful installation of Server with the inclusion of SSH,
LAMP, Postgre SQL, and SAMBA, I booted up the PC. All was Ok so I ran
"sudo shutdown now" and moved the server to it's permanent location
where I hooked it to the network and booted it up.
At this point, it should have gotten a DHCP address, but did not. So I
edited the /etc/network/interfaces file and setup static IP to an
unused IP in my network (10.1.1.252). At this point I could ping my
other computers and my other computers could ping it and could connect
via SSH and could see the default webpage from the LAMP install.
That said, the Ubuntu server COULD NOT ping my gateway which has an IP
of 10.1.1.254. The really weird thing is that my gateway COULD ping
the Ubuntu server!
Here's more information on my config:
My network uses 10.1.1.x for the IP.
My gateway is 10.1.1.254.
The Ubuntu Server is 10.1.1.252.
From my windows laptop I login to the server via SSH no problem. ALL
local connectivity works, EXCEPT from the server to the gateway.
I found someone with the exact same problem:
http://ubuntuforums.org/showthread.php?p=12064102
Here's my post on those forums:
http://ubuntuforums.org/showthread.php?p=12064158
Here's my /etc/network/interfaces file:
auto lo
iface lo inet loopback
auto eth0
iface eth0 inet static
address 10.1.1.252
gateway 10.1.1.254
netmask 255.255.255.0
network 10.1.1.0
broadcast 10.1.1.255
dns-nameservers 10.1.1.254
dns-search lcl
Here's the output of route
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
default 10.1.1.254 0.0.0.0 UG 0 0 0 eth0
10.1.1.0 * 255.255.255.0 U 0 0 0 eth0
localhost * 255.255.255.255 UH 0 0 0 lo
Here's a failed ping of my gateway for 427seconds:
#ping 10.1.1.254
PING 10.1.1.254 (10.1.1.254) 56(84) bytes of data.
--- 10.1.1.254 ping statistics ---
428 packets transmitted, 0 received, 100% packet loss, time 426999ms
Here's the successful ping from my gateway to the Ubuntu Server:
PING 10.1.1.252 (10.1.1.252) from 10.1.1.254: 56 data bytes
64 bytes from 10.1.1.252: icmp_seq=0 ttl=64 time=0.226 ms
64 bytes from 10.1.1.252: icmp_seq=1 ttl=64 time=0.118 ms
64 bytes from 10.1.1.252: icmp_seq=2 ttl=64 time=0.125 ms
--- 10.1.1.252 ping statistics ---
3 packets transmitted, 3 packets received, 0.0% packet loss
round-trip min/avg/max/stddev = 0.118/0.156/0.226/0.049 ms
Here's netstat output.
#netstat -rn
Kernel IP routing table
Destination Gateway Genmask Flags MSS Window irtt Iface
0.0.0.0 10.1.1.254 0.0.0.0 UG 0 0 0 eth0
10.1.1.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
Here's the ifconfig output
#ifconfig
eth0 Link encap:Ethernet HWaddr 00:16:e6:f7:34:d8
inet addr:10.1.1.252 Bcast:10.1.1.255 Mask:255.255.255.0
inet6 addr: fe80::216:e6ff:fef7:34d8/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:725 errors:0 dropped:0 overruns:0 frame:0
TX packets:238 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:66462 (66.4 KB) TX bytes:31108 (31.1 KB)
Interrupt:16 Memory:d0080000-d00a0000
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:161 errors:0 dropped:0 overruns:0 frame:0
TX packets:161 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:52619 (52.6 KB) TX bytes:52619 (52.6 KB)
I am pretty certain that there is a bug in the installation that does not
properly configure the network if no connection is detected. I will be unable
to further test as I must get the server up and running so am beginning a
reinstall now.
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