[ 1551.878311] br0: port 1(dummy0) entered blocking state
[ 1551.878348] br0: port 1(dummy0) entered disabled state
[ 1551.878436] dummy0: entered allmulticast mode
[ 1551.878510] dummy0: entered promiscuous mode
[ 1551.881025] br0: port 1(dummy0) entered blocking state
[ 1551.881052] br0: port 1(dummy0) entered forwarding state
[ 1552.061032] dummy0: left allmulticast mode
[ 1552.061061] dummy0: left promiscuous mode
[ 1552.061089] br0: port 1(dummy0) entered disabled state