On Thu, 6 Feb 2014, Matt wrote:

This is a known problem.  You need to clamp your MAC address down on the
bridge interface of the host to a specific address - just use the real
MAC address of the physical interface.  Otherwise the host can lose
connectivity for short periods whenever a VE is created, stopped, or
started.  This is explained in:

http://openvz.org/VEs_and_HNs_in_same_subnets#Configure_host_bridge_interfaces

This seems to have cured it, I think.

Whenever I do 'service network restart' on the host I get:

Global IPv6 forwarding is disabled in configuration, but not currently
disabled in kernel
Please restart network with '/sbin/service network restart'

What does that mean?  I want IPv6 to work.  Also, I have
'IPV6_DEFROUTE=yes' and 'DEFROUTE=yes' in both ifcfg-vmbr0 and
ifcfg-eth0.  Should they be in both files and what do they do?

Neither. Keep it simple. Did you follow the examples in the above link? Does your network have it's own IPv6 gateway advertising RAs?

You may also want to set the following in /etc/sysctl.conf if they're not already the default:

net.ipv4.ip_forward = 0
net.bridge.bridge-nf-call-ip6tables = 0
net.bridge.bridge-nf-call-iptables = 0


Antonio Querubin
e-mail:  t...@lavanauts.org
xmpp:  antonioqueru...@gmail.com
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