In message <alpine.BSF.2.00.1107042329060.89019@xxxxxxxxx>, "John R. Levine" wri tes: > > The naive approach of reversing the address, converting to nibbles > > and appending a suffix won't scale. > > > > For IPv6 if you did the reverse of /48, /52, /56, /60 and /64 > > prefixes, which matches delegation patterns along with NXDOMAIN > > synthesis, you would still be fine. You stop the search on NXDOMAIN > > or data with perhaps a new value which says to continue searching > > for white listed records. One could even start with /32 if one is > > worried about spammers pretending to be ISPs. > > I don't necessarily disagree, but now you've just upgraded the DNS > (NXDOMAIN synthesis is far from universal) No, just application smarts is needed. The DNS already supports this and it has been used for over 1/2 a decade now. > and layered a probing protocol on top of it. We can have a theological > argument about whether that counts as "using the DNS". > > R's, > John -- Mark Andrews, ISC 1 Seymour St., Dundas Valley, NSW 2117, Australia PHONE: +61 2 9871 4742 INTERNET: marka@xxxxxxx _______________________________________________ Ietf mailing list Ietf@xxxxxxxx https://www.ietf.org/mailman/listinfo/ietf