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I have installed OpenVZ on centos 6 on a dedicated server. I followed quick installation guide on openvz wiki. After installing thru yum, I don't know why, but grub.conf wasn't automatically updated to accomodate new kernel, so I had to do it manually.

I edited grub.conf, added openvz kernel and rebooted - it went fine. Server went up into openvz kernel and it worked, it started openvz service byitself.

But after I created a container, added IP to it and attempted to start it, I couldn't.

Here is the output from the shell:

[root@cloud2 ~]# vzctl start 86
Starting container ...
Container is mounted
Container start failed (try to check kernel messages, e.g. "dmesg | tail")
Container is unmounted
[root@cloud2 ~]# dmesg | tail
[ 1973.401596] CT: 86: failed to start with err=-105
[ 2107.113850] Failed to initialize the ICMP6 control socket (err -105).
[ 2107.155523] CT: 86: stopped
[ 2107.155543] CT: 86: failed to start with err=-105
[ 6348.282184] Failed to initialize the ICMP6 control socket (err -105).
[ 6348.330348] CT: 86: stopped
[ 6348.330361] CT: 86: failed to start with err=-105
[45184.024002] Failed to initialize the ICMP6 control socket (err -105).
[45184.072086] CT: 86: stopped
[45184.072099] CT: 86: failed to start with err=-105
[root@cloud2 ~]#

I don't know what is wrong. I tried different templates, debian 6, centos 6, i386, amd64, but the issue is the same.

What is the problem?

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"Failed to initialize the ICMP6 control socket" means that it could not open an IPv6 ICMP connection. Check your IPv6 settings (if any) and your firewall (iptables) rules. –  Charles Mar 20 '12 at 17:25
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1 Answer

I had similar problem, turns out that the problem was from this container setting: vzctl set 54 --numothersock 120 if you remove it (or set it to something like 1200) the container starts fine.

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