[ 1886.484451] br0: port 1(dummy0) entered blocking state
[ 1886.484490] br0: port 1(dummy0) entered disabled state
[ 1886.484523] dummy0: entered allmulticast mode
[ 1886.484574] dummy0: entered promiscuous mode
[ 1886.488063] br0: port 1(dummy0) entered blocking state
[ 1886.488128] br0: port 1(dummy0) entered forwarding state
[ 1886.740747] dummy0: left allmulticast mode
[ 1886.740787] dummy0: left promiscuous mode
[ 1886.740819] br0: port 1(dummy0) entered disabled state