[ 1577.272425] br0: port 1(dummy0) entered blocking state
[ 1577.272471] br0: port 1(dummy0) entered disabled state
[ 1577.272503] dummy0: entered allmulticast mode
[ 1577.272550] dummy0: entered promiscuous mode
[ 1577.275064] br0: port 1(dummy0) entered blocking state
[ 1577.275097] br0: port 1(dummy0) entered forwarding state
[ 1577.450991] dummy0: left allmulticast mode
[ 1577.451031] dummy0: left promiscuous mode
[ 1577.451117] br0: port 1(dummy0) entered disabled state