[ 1846.575533] br0: port 1(dummy0) entered blocking state
[ 1846.575586] br0: port 1(dummy0) entered disabled state
[ 1846.575624] dummy0: entered allmulticast mode
[ 1846.575688] dummy0: entered promiscuous mode
[ 1846.579472] br0: port 1(dummy0) entered blocking state
[ 1846.579537] br0: port 1(dummy0) entered forwarding state
[ 1846.845740] dummy0: left allmulticast mode
[ 1846.845780] dummy0: left promiscuous mode
[ 1846.845809] br0: port 1(dummy0) entered disabled state