[ 1697.197338] br0: port 1(dummy0) entered blocking state
[ 1697.197416] br0: port 1(dummy0) entered disabled state
[ 1697.197497] dummy0: entered allmulticast mode
[ 1697.197587] dummy0: entered promiscuous mode
[ 1697.200545] br0: port 1(dummy0) entered blocking state
[ 1697.200614] br0: port 1(dummy0) entered forwarding state
[ 1697.402485] dummy0: left allmulticast mode
[ 1697.402532] dummy0: left promiscuous mode
[ 1697.402625] br0: port 1(dummy0) entered disabled state