[ 2053.679378] br0: port 1(dummy0) entered blocking state
[ 2053.679424] br0: port 1(dummy0) entered disabled state
[ 2053.679458] dummy0: entered allmulticast mode
[ 2053.679506] dummy0: entered promiscuous mode
[ 2053.682944] br0: port 1(dummy0) entered blocking state
[ 2053.682978] br0: port 1(dummy0) entered forwarding state
[ 2053.934536] dummy0: left allmulticast mode
[ 2053.934574] dummy0: left promiscuous mode
[ 2053.934656] br0: port 1(dummy0) entered disabled state