[dns-wg] Reverse DNS operational considerations in an IPv6 environment
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David Freedman
david.freedman at uk.clara.net
Tue Jun 15 21:06:11 CEST 2010
> 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
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