[ 1744.244176] br0: port 1(dummy0) entered blocking state
[ 1744.244218] br0: port 1(dummy0) entered disabled state
[ 1744.244252] dummy0: entered allmulticast mode
[ 1744.244302] dummy0: entered promiscuous mode
[ 1744.247039] br0: port 1(dummy0) entered blocking state
[ 1744.247074] br0: port 1(dummy0) entered forwarding state
[ 1744.430230] dummy0: left allmulticast mode
[ 1744.430292] dummy0: left promiscuous mode
[ 1744.430352] br0: port 1(dummy0) entered disabled state