Question about dynamic IPv6-PTR-Generation

Woodworth, John R John.Woodworth at
Sat Aug 27 09:12:29 UTC 2016

> > Simply pretending a shark doesn't exist offers very little in shark
> > protection.  While I understand this school of thought I don't believe
> > it will solve the problem or remove the need.
> We're still in the early phases of IPv6. If sufficient ISPs drop PTR
> for dynamic IPv6 addresses, email providers and others who base some
> sort of "reputation" on IPv4 PTRs today will simply have to adapt.


I think this is bigger than anti-spam logic.  Simply put: Customers
pay for the Internet.  If customers want to "tag" an IPv6 block as
their own as they do with IPv4, why can't they?  Please don't
answer me as if I am a peer, answer as if I am a paying customer
asking "why not?"

Simply deciding a request is silly (even with peer support) won't
make it go away, it will only make your _problem_ become a source
of _revenue_for_your_competitor_ and eventually putting you behind
what _everyone_else_is_already_doing_.

Just my $.02


> Steinar Haug, Nethelp consulting, sthaug at


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