[ 1891.644217] br0: port 1(dummy0) entered blocking state
[ 1891.644291] br0: port 1(dummy0) entered disabled state
[ 1891.644361] dummy0: entered allmulticast mode
[ 1891.644455] dummy0: entered promiscuous mode
[ 1891.648097] br0: port 1(dummy0) entered blocking state
[ 1891.648129] br0: port 1(dummy0) entered forwarding state
[ 1891.910547] dummy0: left allmulticast mode
[ 1891.910585] dummy0: left promiscuous mode
[ 1891.910617] br0: port 1(dummy0) entered disabled state