On Tue, Apr 01, 2008 at 06:34:38AM +1100, Mark Andrews wrote: > > Multiple PTR records do not scale.
what does that mean Mark? why does "Multiple A records" scale and not others? is this a DNS protocol issue or an implementation artifact? > Today we have reverse lookups that fail because people > followed this path and exceeded the 64K DNS message size > of TCP. and the same failure would be true for multiple instances of any RR type. > When people have a 100 thousand virtual domains on a > box you just can't have PTR records for all of them. and apparently you can't have A records for them either. > > Mark so the actual spec limit is any mixture of RR types that will fit into a 64k DNS message on TCP. Right? --bill _______________________________________________ DNSOP mailing list DNSOP@ietf.org https://www.ietf.org/mailman/listinfo/dnsop