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From: sra@LCS.MIT.EDU (Rob Austein)
Newsgroups: comp.protocols.tcp-ip.domains
Subject: Is a glue record required here ?
Message-ID: <9104212017.aa27665@mintaka.lcs.mit.edu>
Date: 22 Apr 91 00:17:04 GMT
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The rule for glue RRs is that you should only add them if there is no
other way that resolvers will be able to contact the nameserver to
which you delegating.  Since, as you say, a resolver could find the
address of the delegated nameserver in your example, there is no need
for a glue RR.  That being the case, you should not add a glue RR.

See RFC-1033 for a more complete discussion of glue RRs.

--Rob Austein