nanog mailing list archives
RE: lame delegations
From: Karyn Ulriksen <kulriksen () publichost com>
Date: Fri, 18 Aug 2000 14:08:49 -0700
With this in mind, then is it just a failing of BIND that it only recognizes the first PTR record and disregards the rest (unlike the typical A record format used for round-robin) ? << Yes, I know what kind of flack that this will lead to, but the logic isn't that wierd... Karyn
10.2. PTR records Confusion about canonical names has lead to a belief that a PTR record should have exactly one RR in its RRSet. This is incorrect, the relevant section of RFC1034 (section 3.6.2) indicates that the value of a PTR record should be a canonical name. That is, it should not be an alias. There is no implication in that section that only one PTR record is permitted for a name. No such restriction should be inferred. Note that while the value of a PTR record must not be an alias, there is no requirement that the process of resolving a PTR record not encounter any aliases. The label that is being looked up for a PTR value might have a CNAME record. That is, it might be an alias. The value of that CNAME RR, if not another alias, which it should not be, will give the location where the PTR record is found. That record gives the result of the PTR type lookup. This final result, the value of the PTR RR, is the label which must not be an alias. -- Greg A. Woods +1 416 218-0098 VE3TCP <gwoods () acm org> <robohack!woods> Planix, Inc. <woods () planix com>; Secrets of the Weird <woods () weird com>
Current thread:
- Re: lame delegations, (continued)
- Re: lame delegations Joshua Goodall (Aug 18)
- Re: lame delegations Gary E. Miller (Aug 18)
- Re: lame delegations Derek J. Balling (Aug 18)
- Re: lame delegations Joshua Goodall (Aug 18)
- Re: lame delegations Valdis . Kletnieks (Aug 18)
- Re: lame delegations Alex Kamantauskas (Aug 18)
- Re: lame delegations Greg A. Woods (Aug 19)
- RE: lame delegations Joshua Goodall (Aug 18)
- RE: lame delegations Greg A. Woods (Aug 18)
- RE: lame delegations Greg A. Woods (Aug 19)
- RE: lame delegations Greg A. Woods (Aug 21)