[ 1664.135963] br0: port 1(dummy0) entered blocking state
[ 1664.136035] br0: port 1(dummy0) entered disabled state
[ 1664.136103] dummy0: entered allmulticast mode
[ 1664.136188] dummy0: entered promiscuous mode
[ 1664.138925] br0: port 1(dummy0) entered blocking state
[ 1664.138954] br0: port 1(dummy0) entered forwarding state
[ 1664.324057] dummy0: left allmulticast mode
[ 1664.324089] dummy0: left promiscuous mode
[ 1664.324142] br0: port 1(dummy0) entered disabled state