[ 2077.193952][ T8579] br0: port 1(dummy0) entered blocking state
[ 2077.194166][ T8579] br0: port 1(dummy0) entered disabled state
[ 2077.194345][ T8579] dummy0: entered allmulticast mode
[ 2077.195405][ T8579] dummy0: entered promiscuous mode
[ 2077.216842][ T8580] br0: port 1(dummy0) entered blocking state
[ 2077.217376][ T8580] br0: port 1(dummy0) entered forwarding state
[ 2079.154786][   T12] dummy0: left allmulticast mode
[ 2079.155097][   T12] dummy0: left promiscuous mode
[ 2079.155315][   T12] br0: port 1(dummy0) entered disabled state