I have a box that I use to run virt-manager, and for virtual networking
I do all that manually, creating a bridge interface to put the real
interface and VM interfaces behind.
Works great, except at random, the br0 interface goes down and does not
recover without an ifdown/ifup.
I'm not sure how to troubleshoot this one. I have a cron to detect it
and fix it, but it shouldn't happen. Any ideas?