[ 2000.299638][T13102] br0: port 1(dummy0) entered blocking state
[ 2000.299869][T13102] br0: port 1(dummy0) entered disabled state
[ 2000.300081][T13102] dummy0: entered allmulticast mode
[ 2000.301899][T13102] dummy0: entered promiscuous mode
[ 2000.335793][T13103] br0: port 1(dummy0) entered blocking state
[ 2000.336044][T13103] br0: port 1(dummy0) entered forwarding state
[ 2002.315263][   T12] dummy0: left allmulticast mode
[ 2002.316453][   T12] dummy0: left promiscuous mode
[ 2002.316731][   T12] br0: port 1(dummy0) entered disabled state