[anti-abuse-wg] Reverse DNS delegations

>>> Why isn't it possible to gain a delegation by proving number
>>> assignment?
>> Because your ISP can't be bothered.
> Is such unbotherability legitimate?

these years, it is one of the things when considering a provider from
which one gets address space.

part of the problem is that this used not to be the case.  "rdns is not
really useful" was the common thought.  so many isps did not pay it much
attention.  now, more and more services are using rdns mapping to defend
against crapola.  so it has become useful, and quite needed in some
cases.

but it is notalways easy to justify to management the costs of cleaning
it up, often involving your provider, sometimes your provider's
provider, and on up the chain.

i have three /48s from an upstream.  rdns is delegated, whew!  but they
are not dnssec signing.  this has yet to cause pain, but i expect it
will somewhere down the road.

randy