[ 2256.995713][T11273] br0: port 1(dummy0) entered blocking state
[ 2256.996028][T11273] br0: port 1(dummy0) entered disabled state
[ 2256.996333][T11273] dummy0: entered allmulticast mode
[ 2256.997329][T11273] dummy0: entered promiscuous mode
[ 2257.031295][T11274] br0: port 1(dummy0) entered blocking state
[ 2257.032422][T11274] br0: port 1(dummy0) entered forwarding state
[ 2259.725914][   T71] dummy0: left allmulticast mode
[ 2259.727384][   T71] dummy0: left promiscuous mode
[ 2259.727915][   T71] br0: port 1(dummy0) entered disabled state