[ 1636.042321] br0: port 1(dummy0) entered blocking state
[ 1636.042372] br0: port 1(dummy0) entered disabled state
[ 1636.042406] dummy0: entered allmulticast mode
[ 1636.042451] dummy0: entered promiscuous mode
[ 1636.045336] br0: port 1(dummy0) entered blocking state
[ 1636.045371] br0: port 1(dummy0) entered forwarding state
[ 1636.231304] dummy0: left allmulticast mode
[ 1636.231342] dummy0: left promiscuous mode
[ 1636.231370] br0: port 1(dummy0) entered disabled state