[ 1708.861640] br0: port 1(dummy0) entered blocking state
[ 1708.861689] br0: port 1(dummy0) entered disabled state
[ 1708.861722] dummy0: entered allmulticast mode
[ 1708.861769] dummy0: entered promiscuous mode
[ 1708.865171] br0: port 1(dummy0) entered blocking state
[ 1708.865204] br0: port 1(dummy0) entered forwarding state
[ 1709.098120] dummy0: left allmulticast mode
[ 1709.098152] dummy0: left promiscuous mode
[ 1709.098180] br0: port 1(dummy0) entered disabled state