[ 1731.689655] br0: port 1(dummy0) entered blocking state
[ 1731.689695] br0: port 1(dummy0) entered disabled state
[ 1731.689731] dummy0: entered allmulticast mode
[ 1731.689790] dummy0: entered promiscuous mode
[ 1731.693263] br0: port 1(dummy0) entered blocking state
[ 1731.693332] br0: port 1(dummy0) entered forwarding state
[ 1731.909661] dummy0: left allmulticast mode
[ 1731.909695] dummy0: left promiscuous mode
[ 1731.909725] br0: port 1(dummy0) entered disabled state