Public bug reported:
With the latest Saucy, LXC containers don't seem to have their network
setting configured correctly. I've tried this with both containers
created before I upgraded to Saucy, and containers freshly created after
the upgrade. In both cases, the guest user-space is 12.04.
After the container has started I try to find the address, but it fails:
$ host precise 10.0.3.1
Using domain server:
Name: 10.0.3.1
Address: 10.0.3.1#53
Aliases:
Host precise not found: 2(SERVFAIL)
Looking in the syslog reveals that it did try to obtain an address, and
dnsmasq did try to serve one (I think). The following is repeated many
times:
Jul 23 12:07:27 GBN-ASTUBBS-UB dnsmasq-dhcp[1475]: DHCPDISCOVER(lxcbr0)
00:16:3e:9e:0f:ee
Jul 23 12:07:27 GBN-ASTUBBS-UB dnsmasq-dhcp[1475]: DHCPOFFER(lxcbr0) 10.0.3.154
00:16:3e:9e:0f:ee
But, still, nothing can get in, and nothing can get out.
Inside the container, ifconfig gives this:
eth0 Link encap:Ethernet HWaddr 00:16:3e:89:48:ab
inet6 addr: fe80::216:3eff:fe89:48ab/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:192 errors:0 dropped:0 overruns:0 frame:0
TX packets:28 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:23650 (23.6 KB) TX bytes:6952 (6.9 KB)
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:65536 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
If I try running "sudo dhclient" manually then I get many more entries
in the log, but still no address.
I can get the network interface to function by configuring it manually:
ifconfig eth0 10.0.3.50/24
route add default gw 10.0.3.1
echo 'nameserver 10.0.3.1' > /run/resolvconf/interface/eth0
service resolvconf restart
I'm sure that the official way to set up a static IP would work too, but
really I want DHCP to work, like it used to.
** Affects: lxc (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1204069
Title:
lxc dhcp fails
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