[ 2132.255250][T12737] br0: port 1(dummy0) entered blocking state
[ 2132.255453][T12737] br0: port 1(dummy0) entered disabled state
[ 2132.255634][T12737] dummy0: entered allmulticast mode
[ 2132.256658][T12737] dummy0: entered promiscuous mode
[ 2132.281191][T12738] br0: port 1(dummy0) entered blocking state
[ 2132.281608][T12738] br0: port 1(dummy0) entered forwarding state
[ 2134.338564][   T72] dummy0: left allmulticast mode
[ 2134.340700][   T72] dummy0: left promiscuous mode
[ 2134.341342][   T72] br0: port 1(dummy0) entered disabled state