On 08/30/2015 11:10 AM, Peter Steele wrote:
Clearly there is user error here on my part and I am not correctly specifying how to configure LXC containers to use host bridging under CentOS. I'll have to do some more digging.


I figured it out. I've been using commands similar to

lxc-create -t /bin/true -n test1 --dir=/lxc/test1/rootfs

I mistakenly assumed that by specifying the directory for the rootfs to be /lxc/test1/rootfs the config file for the container would be /lxc/test1/config. Stupid mistake. LXC still puts the config file in the default location /var/lib/lxc/test1/config, and this file was where virbr0 was being specified. My own config file was correct such as it was, except that it was being ignored. I changed the config file /var/lib/lxc/test1/config to use br0 instead of virbr0 and that solved my problem. My container can now see the full subnet.

A stupid beginner's mistake. What a waste of time... :-(

Thanks for all the feedback.

Peter



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