[ 1660.166550] br0: port 1(dummy0) entered blocking state
[ 1660.166590] br0: port 1(dummy0) entered disabled state
[ 1660.166625] dummy0: entered allmulticast mode
[ 1660.166678] dummy0: entered promiscuous mode
[ 1660.169484] br0: port 1(dummy0) entered blocking state
[ 1660.169518] br0: port 1(dummy0) entered forwarding state
[ 1660.353119] dummy0: left allmulticast mode
[ 1660.353179] dummy0: left promiscuous mode
[ 1660.353240] br0: port 1(dummy0) entered disabled state