[ 2000.775330][T11019] br0: port 1(dummy0) entered blocking state
[ 2000.775532][T11019] br0: port 1(dummy0) entered disabled state
[ 2000.776252][T11019] dummy0: entered allmulticast mode
[ 2000.777245][T11019] dummy0: entered promiscuous mode
[ 2000.801219][T11020] br0: port 1(dummy0) entered blocking state
[ 2000.801755][T11020] br0: port 1(dummy0) entered forwarding state
[ 2003.257657][   T12] dummy0: left allmulticast mode
[ 2003.258384][   T12] dummy0: left promiscuous mode
[ 2003.258964][   T12] br0: port 1(dummy0) entered disabled state