[ 1697.002253] br0: port 1(dummy0) entered blocking state
[ 1697.002295] br0: port 1(dummy0) entered disabled state
[ 1697.002332] dummy0: entered allmulticast mode
[ 1697.002387] dummy0: entered promiscuous mode
[ 1697.004917] br0: port 1(dummy0) entered blocking state
[ 1697.004952] br0: port 1(dummy0) entered forwarding state
[ 1697.191367] dummy0: left allmulticast mode
[ 1697.191408] dummy0: left promiscuous mode
[ 1697.191497] br0: port 1(dummy0) entered disabled state