[ 1706.338271] br0: port 1(dummy0) entered blocking state
[ 1706.338314] br0: port 1(dummy0) entered disabled state
[ 1706.338350] dummy0: entered allmulticast mode
[ 1706.338399] dummy0: entered promiscuous mode
[ 1706.341277] br0: port 1(dummy0) entered blocking state
[ 1706.341308] br0: port 1(dummy0) entered forwarding state
[ 1706.544760] dummy0: left allmulticast mode
[ 1706.544796] dummy0: left promiscuous mode
[ 1706.544829] br0: port 1(dummy0) entered disabled state