>stupid thing I've been wondering:  Is there a reason not to use wildcard
>PTRs?
>
>        $ORIGIN 6.7.6.2.7.6.7.0.1.0.0.2.ip6.arpa.
>        *       604800  IN      PTR     home-ipv6-customer.isp.net.

This turns out to be a Well Known Bad Idea (WKBI).

Most PTR checks look up the name to be sure there's a matching forward
(AAAA in this case) record, and ignore them if there isn't.  You can't
do that with wildcard PTRs unless you have some way of serving 2^64
AAAA records in a single response.

R's,
John

PS to the literal minded: yes, I know that's impossible.

_______________________________________________
DNSOP mailing list
DNSOP@ietf.org
https://www.ietf.org/mailman/listinfo/dnsop

Reply via email to