From owner-freebsd-isp Tue Nov 26 23: 6:11 2002 Delivered-To: freebsd-isp@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 90CBA37B408 for ; Tue, 26 Nov 2002 23:06:10 -0800 (PST) Received: from smtp.internet.dk (smtp.internet.dk [194.19.140.25]) by mx1.FreeBSD.org (Postfix) with ESMTP id 2B78E43E88 for ; Tue, 26 Nov 2002 23:06:09 -0800 (PST) (envelope-from leifn@neland.dk) Received: from gina (0x50c48aec.adsl-fixed.tele.dk [80.196.138.236]) (authenticated) by smtp.internet.dk (8.11.6/8.11.6/Debian/GNU) with ESMTP id gAR762r04864 for ; Wed, 27 Nov 2002 08:06:02 +0100 Message-ID: <00a001c295e3$782aa250$6d05a8c0@gina> From: "Leif Neland" To: References: <20021118231031.GA74664@yazzy.org> <06f701c29591$033fbae0$68c311cc@vineyard.net> Subject: Re: Dynamic DNS Server Date: Wed, 27 Nov 2002 08:06:07 +0100 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1106 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Sender: owner-freebsd-isp@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org ----- Original Message ----- From: "Eric W. Bates" To: "Marcin Jessa" Cc: Sent: Tuesday, November 26, 2002 10:15 PM Subject: Re: Dynamic DNS Server >. > > What's wrong: > I have to do some reading and experimentation about bind9 RR's. I'm not > sure what is a reasonable TTL to submit with the A record with the new IP. > I don't know whether the name server will delete the record when the TTL > expires I've seen TTL's between 60 and 300 seconds for ddns. The nameserver does not delete information it is authoritative for; ttl is just used to tell when non-authoritative systems are supposed to fetch an update from an authoritative system. If you use dig against a non-authoritive server, you will notice the ttl decrements, while from an authoritive server it doesn't. Leif To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isp" in the body of the message