[ 1674.900160] br0: port 1(dummy0) entered blocking state
[ 1674.900200] br0: port 1(dummy0) entered disabled state
[ 1674.900232] dummy0: entered allmulticast mode
[ 1674.900279] dummy0: entered promiscuous mode
[ 1674.902844] br0: port 1(dummy0) entered blocking state
[ 1674.902906] br0: port 1(dummy0) entered forwarding state
[ 1675.100159] dummy0: left allmulticast mode
[ 1675.100221] dummy0: left promiscuous mode
[ 1675.100281] br0: port 1(dummy0) entered disabled state