Date: Thu, 06 Mar 2003 06:28:19 +0100 From: dirk.meyer@dinoex.sub.org (Dirk Meyer) To: freebsd-isp@FreeBSD.ORG, tony@saign.com (tony) Subject: Re: IP addresses changing... Message-ID: <jJawEzPWkR@dmeyer.dinoex.sub.org> References: <200303060331.h263VajI021210@p3.saignon.net>
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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
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