[ 2012.569052][T30510] br0: port 1(dummy0) entered blocking state
[ 2012.572223][T30510] br0: port 1(dummy0) entered disabled state
[ 2012.572416][T30510] dummy0: entered allmulticast mode
[ 2012.573599][T30510] dummy0: entered promiscuous mode
[ 2012.619097][T30511] br0: port 1(dummy0) entered blocking state
[ 2012.619548][T30511] br0: port 1(dummy0) entered forwarding state
[ 2015.285366][   T70] dummy0: left allmulticast mode
[ 2015.285537][   T70] dummy0: left promiscuous mode
[ 2015.285765][   T70] br0: port 1(dummy0) entered disabled state