[ 1881.972915] br0: port 1(dummy0) entered blocking state
[ 1881.973004] br0: port 1(dummy0) entered disabled state
[ 1881.973077] dummy0: entered allmulticast mode
[ 1881.973168] dummy0: entered promiscuous mode
[ 1881.976806] br0: port 1(dummy0) entered blocking state
[ 1881.976844] br0: port 1(dummy0) entered forwarding state
[ 1882.248275] dummy0: left allmulticast mode
[ 1882.248329] dummy0: left promiscuous mode
[ 1882.248360] br0: port 1(dummy0) entered disabled state