[ 1850.498520] br0: port 1(dummy0) entered blocking state
[ 1850.498577] br0: port 1(dummy0) entered disabled state
[ 1850.498611] dummy0: entered allmulticast mode
[ 1850.498660] dummy0: entered promiscuous mode
[ 1850.502252] br0: port 1(dummy0) entered blocking state
[ 1850.502322] br0: port 1(dummy0) entered forwarding state
[ 1850.764547] dummy0: left allmulticast mode
[ 1850.764585] dummy0: left promiscuous mode
[ 1850.764613] br0: port 1(dummy0) entered disabled state