[ 1807.144089] br0: port 1(dummy0) entered blocking state
[ 1807.144158] br0: port 1(dummy0) entered disabled state
[ 1807.144227] dummy0: entered allmulticast mode
[ 1807.144311] dummy0: entered promiscuous mode
[ 1807.147650] br0: port 1(dummy0) entered blocking state
[ 1807.147679] br0: port 1(dummy0) entered forwarding state
[ 1807.380484] dummy0: left allmulticast mode
[ 1807.380516] dummy0: left promiscuous mode
[ 1807.380547] br0: port 1(dummy0) entered disabled state