I was too wondering about how this could work in IPv6. There is no equivalent of RFC1918 for IPv6 and filtering link-local addresses won't do much as every hos

I was too wondering about how this could work in IPv6. There is no equivalent of RFC1918 for IPv6 and filtering link-local addresses won't do much as every host on the LAN is still adressable by its publicly routable address. These are probably too hard to predict, though.