[ 2165.140425][T18504] br0: port 1(dummy0) entered blocking state
[ 2165.140661][T18504] br0: port 1(dummy0) entered disabled state
[ 2165.140874][T18504] dummy0: entered allmulticast mode
[ 2165.141873][T18504] dummy0: entered promiscuous mode
[ 2165.169096][T18505] br0: port 1(dummy0) entered blocking state
[ 2165.169333][T18505] br0: port 1(dummy0) entered forwarding state
[ 2167.036516][   T12] dummy0: left allmulticast mode
[ 2167.037543][   T12] dummy0: left promiscuous mode
[ 2167.039495][   T12] br0: port 1(dummy0) entered disabled state