2010/4/16 Daniel P. Berrange <berrange@xxxxxxxxxx>: > > I don't believe we're recommending STP=off for bridging. > Actually STP=off is "recommended" in the wiki [1] in the ubuntu part, and there are quotes even in the fedora RHEL parts like this: # brctl show bridge name bridge id STP enabled interfaces virbr0 8000.000000000000 yes br0 8000.000e0cb30550 no eth0 I don't know who actually wrote that document but is well written and helpful, and "!google libvirt networking" points there, so it's just a matter of fix imprecisions. If you agree, I'll fix the wiki later (if is editable by anyone), recommending to set STP=on and DELAY=0 in all cases, whatever NAT or bridging configurations are chosen. Greetins, Francesco