[ 1668.581241] br0: port 1(dummy0) entered blocking state
[ 1668.581315] br0: port 1(dummy0) entered disabled state
[ 1668.581384] dummy0: entered allmulticast mode
[ 1668.581472] dummy0: entered promiscuous mode
[ 1668.584769] br0: port 1(dummy0) entered blocking state
[ 1668.584836] br0: port 1(dummy0) entered forwarding state
[ 1668.801385] dummy0: left allmulticast mode
[ 1668.801420] dummy0: left promiscuous mode
[ 1668.801475] br0: port 1(dummy0) entered disabled state