[ 1980.606324][T12506] br0: port 1(dummy0) entered blocking state
[ 1980.606969][T12506] br0: port 1(dummy0) entered disabled state
[ 1980.607135][T12506] dummy0: entered allmulticast mode
[ 1980.607998][T12506] dummy0: entered promiscuous mode
[ 1980.631051][T12507] br0: port 1(dummy0) entered blocking state
[ 1980.631268][T12507] br0: port 1(dummy0) entered forwarding state
[ 1982.646088][   T69] dummy0: left allmulticast mode
[ 1982.646321][   T69] dummy0: left promiscuous mode
[ 1982.646560][   T69] br0: port 1(dummy0) entered disabled state