[ 1888.738810] br0: port 1(dummy0) entered blocking state
[ 1888.738922] br0: port 1(dummy0) entered disabled state
[ 1888.739015] dummy0: entered allmulticast mode
[ 1888.739135] dummy0: entered promiscuous mode
[ 1888.743243] br0: port 1(dummy0) entered blocking state
[ 1888.743308] br0: port 1(dummy0) entered forwarding state
[ 1889.035326] dummy0: left allmulticast mode
[ 1889.035379] dummy0: left promiscuous mode
[ 1889.035413] br0: port 1(dummy0) entered disabled state