[ 1751.265116] br0: port 1(dummy0) entered blocking state
[ 1751.265166] br0: port 1(dummy0) entered disabled state
[ 1751.265203] dummy0: entered allmulticast mode
[ 1751.265254] dummy0: entered promiscuous mode
[ 1751.268738] br0: port 1(dummy0) entered blocking state
[ 1751.268771] br0: port 1(dummy0) entered forwarding state
[ 1751.531176] dummy0: left allmulticast mode
[ 1751.531214] dummy0: left promiscuous mode
[ 1751.531245] br0: port 1(dummy0) entered disabled state