[ 1965.549554][ T1409] br0: port 1(dummy0) entered blocking state
[ 1965.549757][ T1409] br0: port 1(dummy0) entered disabled state
[ 1965.549943][ T1409] dummy0: entered allmulticast mode
[ 1965.551457][ T1409] dummy0: entered promiscuous mode
[ 1965.579490][ T1410] br0: port 1(dummy0) entered blocking state
[ 1965.579769][ T1410] br0: port 1(dummy0) entered forwarding state
[ 1967.603025][   T12] dummy0: left allmulticast mode
[ 1967.603703][   T12] dummy0: left promiscuous mode
[ 1967.603985][   T12] br0: port 1(dummy0) entered disabled state