[ 1678.200041] br0: port 1(dummy0) entered blocking state
[ 1678.200083] br0: port 1(dummy0) entered disabled state
[ 1678.200120] dummy0: entered allmulticast mode
[ 1678.200172] dummy0: entered promiscuous mode
[ 1678.203665] br0: port 1(dummy0) entered blocking state
[ 1678.203728] br0: port 1(dummy0) entered forwarding state
[ 1678.451471] dummy0: left allmulticast mode
[ 1678.451540] dummy0: left promiscuous mode
[ 1678.451606] br0: port 1(dummy0) entered disabled state