[ 1777.857407] br0: port 1(dummy0) entered blocking state
[ 1777.857455] br0: port 1(dummy0) entered disabled state
[ 1777.857492] dummy0: entered allmulticast mode
[ 1777.857545] dummy0: entered promiscuous mode
[ 1777.860857] br0: port 1(dummy0) entered blocking state
[ 1777.860923] br0: port 1(dummy0) entered forwarding state
[ 1778.069745] dummy0: left allmulticast mode
[ 1778.069817] dummy0: left promiscuous mode
[ 1778.069905] br0: port 1(dummy0) entered disabled state