[ 1678.580405] br0: port 1(dummy0) entered blocking state
[ 1678.580461] br0: port 1(dummy0) entered disabled state
[ 1678.580499] dummy0: entered allmulticast mode
[ 1678.580553] dummy0: entered promiscuous mode
[ 1678.583296] br0: port 1(dummy0) entered blocking state
[ 1678.583334] br0: port 1(dummy0) entered forwarding state
[ 1678.775936] dummy0: left allmulticast mode
[ 1678.775974] dummy0: left promiscuous mode
[ 1678.776002] br0: port 1(dummy0) entered disabled state