REVERSE ADDRESS RESOLUTION FOR IPV6

Bill Manning bmanning at ISI.EDU
Tue Jan 9 05:02:53 UTC 2001


% > Forward zone entry may look like:
% > host2  IN AAAA     3ffe:501:ffff::a:b:c:d
% > or
% > host2  IN A6     3ffe:501:ffff::a:b:c:d
% > 
% > And thus you revers in ip6.int would look like:
% > d.0.0.0.c.0.0.0.b.0.0.0.a.0.0.0.0.0.0.0.f.f.f.f.1.0.5.0.e.f.f.3    IN PTR
% > host2.mydomain.com.
% 
% Let's try:
% 
% zone "c.0.0.0.b.0.0.0.a.0.0.0.0.0.0.0.f.f.f.f.1.0.5.0.e.f.f.3.ip6.int" {
% 	type master;
% 	file "master/zone.3ffe:501:ffff::a:b:c";
% };
% 
% ...
% 
% d.0.0.0		IN PTR	host2.mydomain.com.
% 
% Those with actual experience in IPv6 may wish to correct me.  [Bill?]


	Well, the A6 RR is missing a field (the length)
	but the basics are correct.
	Its really prudent to ensure the SOA origin is correct,
	for both the forward and inverse zones.  Particularly for
	the inverse zones, presuming correct offset w/ the '@' 
	is asking for trouble.

	And the inverse -HAS- to be accurate, with -ALL- zeros
	plugged in. In your example, your are missing the zero
	between the 'f' and the '1'... e.g. :f.f.f.f.0.1.0.5:

-- 
--bill



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