[ 1813.251972] br0: port 1(dummy0) entered blocking state
[ 1813.252019] br0: port 1(dummy0) entered disabled state
[ 1813.252053] dummy0: entered allmulticast mode
[ 1813.252106] dummy0: entered promiscuous mode
[ 1813.255731] br0: port 1(dummy0) entered blocking state
[ 1813.255762] br0: port 1(dummy0) entered forwarding state
[ 1813.516899] dummy0: left allmulticast mode
[ 1813.516941] dummy0: left promiscuous mode
[ 1813.516999] br0: port 1(dummy0) entered disabled state