[ 1746.869162] br0: port 1(dummy0) entered blocking state
[ 1746.869206] br0: port 1(dummy0) entered disabled state
[ 1746.869241] dummy0: entered allmulticast mode
[ 1746.869296] dummy0: entered promiscuous mode
[ 1746.872042] br0: port 1(dummy0) entered blocking state
[ 1746.872105] br0: port 1(dummy0) entered forwarding state
[ 1747.066700] dummy0: left allmulticast mode
[ 1747.066788] dummy0: left promiscuous mode
[ 1747.066847] br0: port 1(dummy0) entered disabled state