Once upon a time, Ljubomir Ljubojevic centos@plnet.rs said:
Bridge for VM's is main reason I hate NM. I now mess with both NM and br0 controled by network because I use Windows VM on my laptop. As soon as you disconnect LAN cable your eth and bridge connection are gone and stupid KVM can not recover and reconnect to newly activated bridge when you return LAN cable, even only a second later...
See the NetworkManager-config-server package.