[ 1542.146007] br0: port 1(dummy0) entered blocking state
[ 1542.146049] br0: port 1(dummy0) entered disabled state
[ 1542.146081] dummy0: entered allmulticast mode
[ 1542.146133] dummy0: entered promiscuous mode
[ 1542.148561] br0: port 1(dummy0) entered blocking state
[ 1542.148597] br0: port 1(dummy0) entered forwarding state
[ 1542.312479] dummy0: left allmulticast mode
[ 1542.312510] dummy0: left promiscuous mode
[ 1542.312537] br0: port 1(dummy0) entered disabled state