[ 1939.826636][T22204] br0: port 1(dummy0) entered blocking state
[ 1939.827207][T22204] br0: port 1(dummy0) entered disabled state
[ 1939.827427][T22204] dummy0: entered allmulticast mode
[ 1939.828376][T22204] dummy0: entered promiscuous mode
[ 1939.861026][T22205] br0: port 1(dummy0) entered blocking state
[ 1939.861238][T22205] br0: port 1(dummy0) entered forwarding state
[ 1941.857265][   T12] dummy0: left allmulticast mode
[ 1941.857459][   T12] dummy0: left promiscuous mode
[ 1941.857811][   T12] br0: port 1(dummy0) entered disabled state