[ 1834.144492] br0: port 1(dummy0) entered blocking state
[ 1834.144532] br0: port 1(dummy0) entered disabled state
[ 1834.144563] dummy0: entered allmulticast mode
[ 1834.144615] dummy0: entered promiscuous mode
[ 1834.147988] br0: port 1(dummy0) entered blocking state
[ 1834.148052] br0: port 1(dummy0) entered forwarding state
[ 1834.389192] dummy0: left allmulticast mode
[ 1834.389275] dummy0: left promiscuous mode
[ 1834.389340] br0: port 1(dummy0) entered disabled state