[ 1720.992574] br0: port 1(dummy0) entered blocking state
[ 1720.992627] br0: port 1(dummy0) entered disabled state
[ 1720.992665] dummy0: entered allmulticast mode
[ 1720.992729] dummy0: entered promiscuous mode
[ 1720.995832] br0: port 1(dummy0) entered blocking state
[ 1720.995863] br0: port 1(dummy0) entered forwarding state
[ 1721.208234] dummy0: left allmulticast mode
[ 1721.208276] dummy0: left promiscuous mode
[ 1721.208312] br0: port 1(dummy0) entered disabled state