[ 1891.526214][ T6258] br0: port 1(dummy0) entered blocking state
[ 1891.526399][ T6258] br0: port 1(dummy0) entered disabled state
[ 1891.526556][ T6258] dummy0: entered allmulticast mode
[ 1891.527530][ T6258] dummy0: entered promiscuous mode
[ 1891.554961][ T6259] br0: port 1(dummy0) entered blocking state
[ 1891.555266][ T6259] br0: port 1(dummy0) entered forwarding state
[ 1893.545112][   T12] dummy0: left allmulticast mode
[ 1893.545404][   T12] dummy0: left promiscuous mode
[ 1893.545631][   T12] br0: port 1(dummy0) entered disabled state