Date: 04 May 2001 16:10:22 +0100 From: Wayne Pascoe <wayne.pascoe@realtime.co.uk> To: "Elliott Perrin" <eperrin@bigorbit.com> Cc: freebsd-questions@freebsd.org Subject: Re: Purpose of serial number in zone files (BIND) Message-ID: <m1bsp9duap.fsf@zaphod.realtime.co.uk> In-Reply-To: <00ae01c0d4ab$9160cbf0$8701a8c0@bottleneck2000> References: <m1wv7xdww5.fsf@zaphod.realtime.co.uk> <20010504163252.D50786@d9168.upc-d.chello.nl> <m1k83xdvu3.fsf@zaphod.realtime.co.uk> <00ae01c0d4ab$9160cbf0$8701a8c0@bottleneck2000>
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"Elliott Perrin" <eperrin@bigorbit.com> 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
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