[ 1775.674786] br0: port 1(dummy0) entered blocking state
[ 1775.674866] br0: port 1(dummy0) entered disabled state
[ 1775.674937] dummy0: entered allmulticast mode
[ 1775.675022] dummy0: entered promiscuous mode
[ 1775.679472] br0: port 1(dummy0) entered blocking state
[ 1775.679505] br0: port 1(dummy0) entered forwarding state
[ 1775.987152] dummy0: left allmulticast mode
[ 1775.987190] dummy0: left promiscuous mode
[ 1775.987288] br0: port 1(dummy0) entered disabled state