[ 2300.433456][T21112] br0: port 1(dummy0) entered blocking state
[ 2300.433758][T21112] br0: port 1(dummy0) entered disabled state
[ 2300.434019][T21112] dummy0: entered allmulticast mode
[ 2300.435128][T21112] dummy0: entered promiscuous mode
[ 2300.463502][T21113] br0: port 1(dummy0) entered blocking state
[ 2300.464397][T21113] br0: port 1(dummy0) entered forwarding state
[ 2302.938688][   T64] dummy0: left allmulticast mode
[ 2302.939469][   T64] dummy0: left promiscuous mode
[ 2302.939800][   T64] br0: port 1(dummy0) entered disabled state