nanog mailing list archives
Re: comcast ipv6 PTR
From: Joe Abley <jabley () hopcount ca>
Date: Wed, 9 Oct 2013 10:29:46 -0700
On 2013-10-09, at 10:10, Chris Adams <cma () cmadams net> wrote:
Once upon a time, Blair Trosper <blair.trosper () gmail com> said:True, but the location information, at least the state, is quasi-helpful.That's another good reason to have reverse records for defined router interfaces. Auto-generated reverse for eveything doesn't give any useful info though.
If people really want to use generic reverse names and have realised that the v6 address space is much too big for $GENERATE, one approach is to delegate the appropriate zones to a custom nameserver that can auto-generate PTRs on demand. There are scaling problems here, but probably nothing that can't be fixed with high TTLs and multiple nameservers. If I was doing that, my instinct would be to code against Ray Bellis' evldns (see <http://code.google.com/p/evldns/>). Note that I'm not suggesting that auto-generated v6 PTRs (or v4 PTRs) are a good idea. But I'm aware that a lack of reverse DNS on either protocol can make the helpdesk phone ring, so there is certainly a pragmatic argument in favour of it. Joe
Current thread:
- comcast ipv6 PTR Blair Trosper (Oct 09)
- Re: comcast ipv6 PTR Chris Adams (Oct 09)
- Re: comcast ipv6 PTR Robert Webb (Oct 09)
- Re: comcast ipv6 PTR Chris Adams (Oct 09)
- Re: comcast ipv6 PTR Paul Ferguson (Oct 09)
- Re: comcast ipv6 PTR Chris Adams (Oct 09)
- Re: comcast ipv6 PTR Livingood, Jason (Oct 09)
- Re: comcast ipv6 PTR Blair Trosper (Oct 09)
- Re: comcast ipv6 PTR Chris Adams (Oct 09)
- Re: comcast ipv6 PTR Joe Abley (Oct 09)
- Re: comcast ipv6 PTR John Levine (Oct 09)
- Re: comcast ipv6 PTR Robert Webb (Oct 09)
- Re: comcast ipv6 PTR Chris Adams (Oct 09)
- Re: comcast ipv6 PTR Barry Shein (Oct 09)
- Re: comcast ipv6 PTR Chris Adams (Oct 09)
- Re: comcast ipv6 PTR Barry Shein (Oct 09)
- Re: comcast ipv6 PTR Lee Howard (Oct 14)
- Re: comcast ipv6 PTR Barry Shein (Oct 14)
- Re: comcast ipv6 PTR Franck Martin (Oct 14)
- Re: comcast ipv6 PTR Paul Ferguson (Oct 14)
- Re: comcast ipv6 PTR Barry Shein (Oct 14)
- Re: comcast ipv6 PTR John Levine (Oct 14)