[ 1744.806568] br0: port 1(dummy0) entered blocking state
[ 1744.806616] br0: port 1(dummy0) entered disabled state
[ 1744.806645] dummy0: entered allmulticast mode
[ 1744.806697] dummy0: entered promiscuous mode
[ 1744.809249] br0: port 1(dummy0) entered blocking state
[ 1744.809284] br0: port 1(dummy0) entered forwarding state
[ 1744.988225] dummy0: left allmulticast mode
[ 1744.988256] dummy0: left promiscuous mode
[ 1744.988285] br0: port 1(dummy0) entered disabled state