Re: [libvirt] PATCH 1/4: More generic MAC address handling

This patch improves the MAC address handling. Currently our XML parser auto-generates a MAC addres using the KVM vendor prefix. This isn't much use for other drivers. This patch addresses this: - Stores each driver's vendor prefix in the capability object - Changes domain parser to use the per-driver vendor prefix for generating mac addresses - Adds more utility methods to util.c for parsing/generating/formatting MAC addresses - Updates each driver to record its vendor prefix for MAC address. NB, for LXC driver we're 'borrowing' KVM's vendor prefix.