[dns-wg] Reverse DNS operational considerations in an IPv6 environment

> Reverse lookups for IPv6 addresses is a bit of a religious issue. IIRC
> someone (Johan Ihren?) gave a presentation at a RIPE meeting a few
> years ago and said it was best not to bother with any PTRs in the
> reverse zones for IPv6 space. I think his argument was the world was
> moving away from name-based access controls to things based on crypto
> tokens, making reverse lookups pointless. That said, my mail server
> does not accept inbound SMTP if the connecting host fails to have a
> working reverse DNS entry: this is remarkably good at spam suppression.

We for one welcome our new ID/LOC split overlords :)

Still, you will need locator rDNS and the locator space will still be as
big...

------------------------------------------------
David Freedman 
Group Network Engineering
Claranet Limited
http://www.clara.net