> From: da...@lang.hm [mailto:da...@lang.hm] > > > With IPv6 if you wish, you can NAT every internal IP address to its > own > > unique external address. I understand mathematically speaking that > might > > not be true (you could have 64million internal IP's and only > 64thousand > > external ones) but practically speaking it is true. > > What's the advantage of useing NAT to map every internal address to > it's > own external address? why not use those external addresses directly? > You > have added an extra layer of complexity and I don't see the benifit.
If we're acknowledging that the purpose of NAT is not strictly limited to number of IP addresses, if one of the benefits of NAT is to mask the internal network topology ... You can use IPv6 NAT if you wish to mask the internal network topology. This way, you still enable p2p better than you could with IPv4, and you still gain the benefit of masking the network topology. > ahh, but with the way IPv6 is 'supposed' to work, those link-level > addresses are supposed to be routable (and there's no reason to not I'm starting to get the impression you don't know what you're talking about. It's standard in IPv6, for each device to have three IP addresses: The localhost address, a link local address, and a world routable address. The localhost address is analogous to 127.0.0.1, which is the same on every device, for the purpose of enabling a device to talk to itself, and not accessible by any other means. The link local address is a nonroutable address beginning in fe80::/10 and the purpose is to enable all IPv6 enabled devices to talk to other IPv6 enabled devices on the same local area network, even if there is no IPv6 connectivity to the world. And of course, the world routable IPv6 address is what you've incorrectly called the link-level address above. ... What I said was: > At present, the printer and toaster are safe from the Internet because they > are not reachable from the internet. There's not a lot of reason for the > toaster to support IPv6, but even if it does, there's nothing forcing it to > take an internet routable IPv6 address. It can function perfectly well > using a link-local address only. _______________________________________________ Discuss mailing list Discuss@lopsa.org http://lopsa.org/cgi-bin/mailman/listinfo/discuss This list provided by the League of Professional System Administrators http://lopsa.org/
