Public bug reported:
LXC containers configured with lxc.network.mtu = 9000
On start/restart using lxc-* commands, the mtu on the host and in
container interface is correctly set to 9000.
However, if the container is rebooted internally, the mtu of the veth on
the host resets to 1500, whilst the container interface is still set to
9000.
This causes some odd network behaviour.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: lxc 1.0.6-0ubuntu0.1 [modified:
usr/share/lxc/config/ubuntu.common.conf]
ProcVersionSignature: Ubuntu 3.13.0-35.62-generic 3.13.11.6
Uname: Linux 3.13.0-35-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.6
Architecture: amd64
Date: Thu Dec 11 20:34:27 2014
SourcePackage: lxc
UpgradeStatus: No upgrade log present (probably fresh install)
defaults.conf:
lxc.network.type = veth
lxc.network.link = lxcbr0
lxc.network.flags = up
lxc.network.hwaddr = 00:16:3e:xx:xx:xx
** Affects: lxc (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug trusty uec-images
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https://bugs.launchpad.net/bugs/1401658
Title:
Host veth mtu not preserved during container reboot
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