[ 1777.272367] br0: port 1(dummy0) entered blocking state
[ 1777.272411] br0: port 1(dummy0) entered disabled state
[ 1777.272452] dummy0: entered allmulticast mode
[ 1777.272509] dummy0: entered promiscuous mode
[ 1777.276066] br0: port 1(dummy0) entered blocking state
[ 1777.276099] br0: port 1(dummy0) entered forwarding state
[ 1777.526884] dummy0: left allmulticast mode
[ 1777.526960] dummy0: left promiscuous mode
[ 1777.527043] br0: port 1(dummy0) entered disabled state