[ 1912.659451][T11142] br0: port 1(dummy0) entered blocking state
[ 1912.659660][T11142] br0: port 1(dummy0) entered disabled state
[ 1912.659837][T11142] dummy0: entered allmulticast mode
[ 1912.661173][T11142] dummy0: entered promiscuous mode
[ 1912.681097][T11143] br0: port 1(dummy0) entered blocking state
[ 1912.681366][T11143] br0: port 1(dummy0) entered forwarding state
[ 1914.548439][   T12] dummy0: left allmulticast mode
[ 1914.548739][   T12] dummy0: left promiscuous mode
[ 1914.548952][   T12] br0: port 1(dummy0) entered disabled state