To:
Bruce Campbell <bruce.campbell@apnic.net>
Cc:
dnsop@cafax.se
From:
Mark.Andrews@nominum.com
Date:
Thu, 10 May 2001 11:25:26 +1000
In-reply-to:
Your message of "Thu, 10 May 2001 09:50:26 +1000." <Pine.BSF.4.21.0105100927150.43413-100000@julubu.staff.apnic.net>
Sender:
owner-dnsop@cafax.se
Subject:
Re: Should a nameserver know about itself?
> > On Wed, 9 May 2001, James Raftery wrote: > > > And for IE too. An authoritative nameserver is authoritative for a > > finite set of zones. There is no reason to presume the auth. server's > > own A RR is in one of the zones it's serving. > > Right. Now that we've gotten that out of the way, can anyone suggest a > *reliable* test for verifying that a nameserver is responding ( which is > seperate from verifying that a nameserver is authoritatively serving a > given zone ) Send it a non-recursive query. A nameserver should always answer even if it is just a header containing refused, servfail or notimp. With this in mind the status opcode would be a good one to use. It should always come back notimp/refused. Mark > > -- > Bruce Campbell <bruce.campbell@apnic.net> +61-7-3367-0490 > Systems Administrator APNIC > > -- Mark Andrews, Nominum Inc. 1 Seymour St., Dundas Valley, NSW 2117, Australia PHONE: +61 2 9871 4742 INTERNET: Mark.Andrews@nominum.com