nanog mailing list archives
Re: Performance Issues - PTR Records
From: Paul Ebersman <list-nanog2 () dragon net>
Date: Fri, 04 Nov 2011 09:28:14 -0700
paul4004> It is entirely possible they have it pointed to their paul4004> non-existent or broken DNS. Given current best practices, I paul4004> see no reason not to assign a generic paul4004> x.x.x.x-dynamic.customer.isp.com DNS across their netblock. It's already been pointed out that lame delegations are more likely problems for many. But the "we'll just pre-fill in-addr to avoid problems" isn't going to work for ip6.arpa. If anyone has enough hardware to serve the zone for a /48 (64k * 4bil * 4bil * bytes-in-record), I'd love to see it. :) We need to get web and app folks to stop counting on ip6.arpa/in-addr.arpa as a validation of trustworthiness. PTR make some sense for validating servers, MTAs, etc. and it's handy for traceroute but it was never a great tool and it's getting less useful with time.
Current thread:
- Performance Issues - PTR Records Matt Chung (Nov 02)
- Re: Performance Issues - PTR Records Jeff Walter (Nov 02)
- Re: Performance Issues - PTR Records Ben Jencks (Nov 02)
- Re: Performance Issues - PTR Records PC (Nov 02)
- Re: Performance Issues - PTR Records J (Nov 02)
- Re: Performance Issues - PTR Records Matt Chung (Nov 02)
- Re: Performance Issues - PTR Records Larry Smith (Nov 02)
- Re: Performance Issues - PTR Records Jimmy Hess (Nov 02)
- Re: Performance Issues - PTR Records PC (Nov 02)
- Re: Performance Issues - PTR Records Paul Ebersman (Nov 04)
- Re: Performance Issues - PTR Records Tim Franklin (Nov 04)
- Re: Performance Issues - PTR Records Paul Ebersman (Nov 04)
- Re: Performance Issues - PTR Records Tom Lanyon (Nov 06)
- Re: Performance Issues - PTR Records Mark Andrews (Nov 06)
- Re: Performance Issues - PTR Records Jimmy Hess (Nov 06)
- Re: Performance Issues - PTR Records Robert Bonomi (Nov 06)
- Re: Performance Issues - PTR Records Chris Adams (Nov 06)
- Re: Performance Issues - PTR Records Tom Lanyon (Nov 06)
- Re: Performance Issues - PTR Records Robert Bonomi (Nov 06)
- Re: Performance Issues - PTR Records Valdis . Kletnieks (Nov 06)