[ 1581.751421] br0: port 1(dummy0) entered blocking state
[ 1581.751476] br0: port 1(dummy0) entered disabled state
[ 1581.751530] dummy0: entered allmulticast mode
[ 1581.751608] dummy0: entered promiscuous mode
[ 1581.754502] br0: port 1(dummy0) entered blocking state
[ 1581.754526] br0: port 1(dummy0) entered forwarding state
[ 1581.942259] dummy0: left allmulticast mode
[ 1581.942284] dummy0: left promiscuous mode
[ 1581.942305] br0: port 1(dummy0) entered disabled state