[ 1786.501577] br0: port 1(dummy0) entered blocking state
[ 1786.501659] br0: port 1(dummy0) entered disabled state
[ 1786.501730] dummy0: entered allmulticast mode
[ 1786.501818] dummy0: entered promiscuous mode
[ 1786.505634] br0: port 1(dummy0) entered blocking state
[ 1786.505666] br0: port 1(dummy0) entered forwarding state
[ 1786.768763] dummy0: left allmulticast mode
[ 1786.768797] dummy0: left promiscuous mode
[ 1786.768827] br0: port 1(dummy0) entered disabled state