[ 1722.111898] br0: port 1(dummy0) entered blocking state
[ 1722.111937] br0: port 1(dummy0) entered disabled state
[ 1722.111973] dummy0: entered allmulticast mode
[ 1722.112028] dummy0: entered promiscuous mode
[ 1722.114759] br0: port 1(dummy0) entered blocking state
[ 1722.114796] br0: port 1(dummy0) entered forwarding state
[ 1722.305723] dummy0: left allmulticast mode
[ 1722.305808] dummy0: left promiscuous mode
[ 1722.305871] br0: port 1(dummy0) entered disabled state