Question about dynamic IPv6-PTR-Generation

[John Levine]

>A very popular option is to only create or delegate IPv6 PTR entries for
>hosts with static address assignments, and to return NXDOMAIN for
>address space used for dynamic address assignments.

I talk to a lot of large providers at M3AAWG and that's the consensus
about what to do.  If it doesn't have a static address, it's not a
server and it doesn't need rDNS.

R's,
John