Glue at root

[Barry Margolin]

In article <a8flt0$rgl at pub3.rc.vix.com>,
Tom Sellers <tsellers at myrealbox.com> wrote:
>Having said that, may I ask, what are the consequences of not having 'Glue'.
>Can they be serious? The warning says the behaviour is allowed but may slow
>it down, is speed the only consequence?

You only need glue if the name of the nameserver is in the domain that's
being delegated to it, e.g. your domain is yourdomain.com, and its
nameservers are ns1.yourdomain.com and ns2.yourdomain.com.  If you don't
have glue, you have a chicken-and-egg problem: in order to look up the
addresses of the nameservers, you have to ask one of those nameservers, but
you can't do that if you don't know their addresses.  Glue records are
copies of the A records in the parent domain, so that they'll be supplied
when referrals are given.

-- 
Barry Margolin, barmar at genuity.net
Genuity, Woburn, MA
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