From owner-freebsd-isp Wed Mar 5 21:30:22 2003 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 0283337B401 for ; Wed, 5 Mar 2003 21:30:21 -0800 (PST) Received: from net2.dinoex.sub.org (net2.dinoex.de [212.184.201.182]) by mx1.FreeBSD.org (Postfix) with ESMTP id 48BD043FA3 for ; Wed, 5 Mar 2003 21:30:19 -0800 (PST) (envelope-from dirk.meyer@dinoex.sub.org) Received: from net2.dinoex.sub.org (dinoex@net2.dinoex.de [212.184.201.182]) by net2.dinoex.sub.org (8.12.8/8.12.8) with ESMTP id h265U6mo028904; Thu, 6 Mar 2003 06:30:08 +0100 (CET) (envelope-from dirk.meyer@dinoex.sub.org) X-Authentication-Warning: net2.dinoex.sub.org: Host dinoex@net2.dinoex.de [212.184.201.182] claimed to be net2.dinoex.sub.org Received: from gate.dinoex.sub.org (dinoex@localhost) by net2.dinoex.sub.org (8.12.8/8.12.8/Submit) with BSMTP id h265U45K028890; Thu, 6 Mar 2003 06:30:04 +0100 (CET) (envelope-from dirk.meyer@dinoex.sub.org) To: freebsd-isp@FreeBSD.ORG, tony@saign.com (tony) Message-ID: From: dirk.meyer@dinoex.sub.org (Dirk Meyer) Organization: privat Subject: Re: IP addresses changing... Date: Thu, 06 Mar 2003 06:28:19 +0100 X-Mailer: Dinoex 1.79 References: <200303060331.h263VajI021210@p3.saignon.net> X-Gateway: ZCONNECT gate.dinoex.sub.org [UNIX/Connect 0.94] X-Accept-Language: de,en X-PGP-Fingerprint: 44 16 EC 0A D3 3A 4F 28 8A 8A 47 93 F1 CF 2F 12 X-Noad: Please don't send me ad's by mail. I'm bored by this type of mail. X-Copyright: (C) Copyright 2001 by Dirk Meyer -- All rights reserved. X-Note: sending SPAM is a violation of both german and US law and will at least trigger a complaint at your provider's postmaster. X-PGP-Key-Avail: mailto:pgp-public-keys@keys.de.pgp.net Subject:GET 0x331CDA5D X-No-Archive: yes X-ZC-VIA: 20030306000000W+1@dinoex.sub.org 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 tony wrote: > I just received an email from my ISP that all my IP addresses are changing! > Any hints from anyone on how to keep the downtime minimal, and update all my > DNS records so I don't fall off the face of the Internet! 1) make sure your DNS servers stay reachable. in doubt use entries for old an new as nameservers. IN NS new-dns-server.do.amin. IN NS old-dns-server.do.amin. IN NS backup.do.main. 2) limit the time the entries given out by your dns eg. 100 seconds www 100 IN A 10.10.10.10 3) 3 hours before the change: limit the time the entries given out by your dns www 1 IN A 10.10.10.10 4) you move ... www 1 IN A 10.20.20.20 5) you can now swtichback to 3 if something is wrong. if everything is fine .... make teh entries full valid again: www IN A 10.20.20.20 > I have 5 days.... already short, some servers will cache your entries for a week. but the time to life in DNS will still help 90% of your customers. kind regards Dirk - Dirk Meyer, Im Grund 4, 34317 Habichtswald, Germany - [dirk.meyer@dinoex.sub.org],[dirk.meyer@guug.de],[dinoex@FreeBSD.org] To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isp" in the body of the message