[ 1642.071769] br0: port 1(dummy0) entered blocking state
[ 1642.071847] br0: port 1(dummy0) entered disabled state
[ 1642.071914] dummy0: entered allmulticast mode
[ 1642.071998] dummy0: entered promiscuous mode
[ 1642.074900] br0: port 1(dummy0) entered blocking state
[ 1642.074931] br0: port 1(dummy0) entered forwarding state
[ 1642.262464] dummy0: left allmulticast mode
[ 1642.262505] dummy0: left promiscuous mode
[ 1642.262539] br0: port 1(dummy0) entered disabled state