IPv6 routing /48s
jbates at brightok.net
Wed Nov 19 16:38:27 CST 2008
Michael Sinatra wrote:
> If your reference to 2001:: addressing simply means "non-tunneled,
> globally routable IPv6 addressing," then I suppose it is okay. But
> please note that there is now a lot of native (non-tunneled), globally
> routable IPv6 addressing that is outside of 2001::/16. ARIN, for
> example, is allocating blocks out of 2607::/16 and there are quite a
> large number of prefixes elsewhere in the designated globally-routable
> 2000::/3 that are *not* 6to4 addresses.
heh, these days, lots of it is still tunneled, though through more
conventional means. But yes, I should have been more clear. Just too
used to seeing 2001::/16 and too lazy to figure out the proper
terminology (The original topic is something I've been heavily testing
lately while I figure out how closely I can get to customer edges and
how they will react).
> The reason I bring this up is that I have already seen certain
> applications, such as one for registering AAAA records for DNS servers
> in a certain TLD, that don't allow anything other than 2001::/16.
> (Fortunately that application was fixed quickly when those responsible
> were notified.) Just making sure others aren't careening toward making
> the same mistake.
Agreed, and thanks for correcting my post. Would hate for others to take
my offhanded comments on addressing and use them in production apps.
More information about the NANOG