From owner-freebsd-questions Fri May 4 8:10:49 2001 Delivered-To: freebsd-questions@freebsd.org Received: from clientmail.realtime.co.uk (simian.realtime.co.uk [194.205.134.131]) by hub.freebsd.org (Postfix) with ESMTP id 0CC2C37B43F for ; Fri, 4 May 2001 08:10:44 -0700 (PDT) (envelope-from waynep@zaphod.realtime.co.uk) Received: from zaphod.realtime.co.uk ([194.205.134.208]) by clientmail.realtime.co.uk with esmtp (Exim 3.20 #1) id 14vhDu-0005G4-01; Fri, 04 May 2001 16:10:26 +0100 Received: from waynep by zaphod.realtime.co.uk with local (Exim 3.20 #1) id 14vhDr-000MKZ-00; Fri, 04 May 2001 16:10:23 +0100 From: Wayne Pascoe To: "Elliott Perrin" Cc: freebsd-questions@freebsd.org Subject: Re: Purpose of serial number in zone files (BIND) References: <20010504163252.D50786@d9168.upc-d.chello.nl> <00ae01c0d4ab$9160cbf0$8701a8c0@bottleneck2000> Reply-To: wayne.pascoe@realtime.co.uk Date: 04 May 2001 16:10:22 +0100 In-Reply-To: <00ae01c0d4ab$9160cbf0$8701a8c0@bottleneck2000> Message-ID: Lines: 25 User-Agent: Gnus/5.0808 (Gnus v5.8.8) XEmacs/21.1 (Cuyahoga Valley) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG "Elliott Perrin" writes: > If you host foo.com and someone from ISP1 has requested > http://www.foo.com they will get the record from your servers. Now > if you make a zone file change, and the serial stays the same, the > user on ISP 1 will make a request for say, www2.foo.com, which you > have moved from 192.168.1.1 over to 192.168.1.5..... Well, the user > on ISP1 will never know about the move, and will try to connect to > the old address cause ISP1's cache has not seen the serial number > increment.....and will not see it until your expiry is reached..... > > AFAIR --- all DNS servers, BIND or otherwise must have a serial > number declared (I know that the crackhead DNS on Win boxes does, > MacDNS, etc..... all have to use serials) Perfect! That's exactly what I was asking. So machines other than secondaries do use it, so I do need to implement it. Thanks a stack for that ! -- - Wayne Pascoe E-mail: wayne.pascoe@realtime.co.uk Phone : +44 (0) 20 7544 4668 Mobile: +44 (0) 788 431 1675 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message