[libvirt] Replace AF_LOCAL with AF_PACKET

Hi, I've a question on whether it's 'safe' to change the socket type used in virNetxxx calls from AF_PACKET to AF_LOCAL ? The reason I ask is that we're using libvirt-lxc with a couple of bridge interfaces, and we've found that the socket close call on AF_PACKET type sockets takes between 40ms and 60ms. For our container config there is roughly 12 close calls on AF_PACKET sockets, delaying the start-up of the LXC container by around 450ms. So a simple fix to speed up our container start-up is to just switch from AF_PACKET to AF_LOCAL sockets. Hence my question on whether we can safely do this, or is there some reason why AF_PACKET was chosen ? Thanks in advance, Ben. FWIW - I believe that AF_PACKET sockets take so long to close is because the kernel packet driver calls synchronize_net() when closing.