[ 2136.976714][T21931] br0: port 1(dummy0) entered blocking state
[ 2136.976904][T21931] br0: port 1(dummy0) entered disabled state
[ 2136.977075][T21931] dummy0: entered allmulticast mode
[ 2136.977938][T21931] dummy0: entered promiscuous mode
[ 2137.011395][T21932] br0: port 1(dummy0) entered blocking state
[ 2137.011610][T21932] br0: port 1(dummy0) entered forwarding state
[ 2138.982622][   T69] dummy0: left allmulticast mode
[ 2138.982812][   T69] dummy0: left promiscuous mode
[ 2138.983028][   T69] br0: port 1(dummy0) entered disabled state