How to set hwaddr in docker 0.9.x

Question

i was using -lxc-conf="lxc.network.hwaddr=00:21:6a:81:17:d6" to specify the MAC address that the container should use.

From 0.9 it stopped working... any idea if there is any other way to accomplish this in 0.9?

Thanks

Answer 1

Before 0.9, Docker was using LXC as "backend driver", that allowed almost any raw LXC option to be passed as-is.

The 0.9 release includes an internal implementation of Cgroups and namespaces, Docker thus skips the LXC layer to "talk" directly with the low-level containerization tools.

I don't know yet how to pass advanced options to this internal implementation/driver (libcontainer), but you can tell Docker to keep using LXC (still supported) using the following startup option:

    docker --daemon=true -e lxc

You could check if your distribution has a /etc/defaults/docker configuration file where you could add this -e parameter and then restart docker (service docker restart)