On 9/1/13 16:30 , Brian E Carpenter wrote:
So, is there any real operational value in this, or is it just a case of "we did it for v4 so it must be right for v6"?Brian
Purely in the context of servers, especially well-know services like mail and web, just to name a couple, I think there is some value in having PTR records. PTRs help add some positive reputation and credence that you are talking to an authorized service and not just a fly-by-night service. I don't necessarily think this should be required for every service, but requiring this for mail servers doesn't seem completely out of line, for several reasons mentioned by others.
Also, I would really like to see all routers have at least some generic PTR, simply for the sake of traceroute. And, traceroute itself is a reasonable excuse to have PTR records on most well-known services.
However, in IPv4 some have required PTRs even on client and essentially every IPv4 address used on the Internet. I think this has little value and would most definitely be a case of "we did it for v4 so it must be right for v6", not to mention the fact that /64 for all practical purposes is innumerable.
So, I wouldn't want to generically reuse the same operational practices for PTRs in IPv6 that we have use in IPv4 up to now, but that doesn't mean I think PTR are completely obsolete and I think they have value in some situation, this is probably one of them.
thanks
-------- Original Message -------- Subject: [nznog] Orcon IPv6 rDNS delegation Date: Mon, 2 Sep 2013 02:08:47 +1200 From: Jonathan Spence <[email protected]> Reply-To: [email protected] To: <[email protected]> Hi everyone, Google have just started enforcing PTR records for IPv6 addresses delivering to Gmail. Our IPv6 works great with Orcon but having serious issues getting delegation back to our nameservers setup. <irrelevant operational details omitted>
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