On 27 Oct 2011, at 12:24, Jim Reid wrote: > On 27 Oct 2011, at 11:12, Joao Damas wrote: > >>> I've come across a configuration "in the wild" where a given zone >>> 'z' contains both >>> >>> a.z. NS some.name.server. >>> >>> *and* >>> >>> sub.a.z. NS some.other.name.server. >> >> are some.name.server and some.other.name.server really different servers? >> Different instances of name server software(not only different IP addresses)? > > Why would the NS records' RDATA matter to the z zone Joao? The NS records > have owner names living under two discrete but nested zone cuts. I don't > understand how the z zone would (need to) care about hostnames in the server > or name.server zone. Or if they even resolve.
because some implementation merge info if it is available, if they host the databases for both zones, which leads to different observed behaviours in responses. Having said that, the registry for z. should not be delegating both a.z. and sub.a.z. (but it may happen in private DNS where z. is a small local "TLD" not part of the Internet's DNS). Joao _______________________________________________ DNSOP mailing list DNSOP@ietf.org https://www.ietf.org/mailman/listinfo/dnsop
