[CentOS] Configuring BIND to answer to two domain names (four IP addresses)

Dotan Cohen dotancohen at gmail.com
Mon Sep 27 10:33:53 EDT 2010

On Mon, Sep 27, 2010 at 13:27, Brent L. Bates <blbates at vigyan.com> wrote:
>     Just noticed something.  Have your serial number reflect the date you
> last updated the file.  That way you will know when you last changed it.  For
> example, today is September 27, 2010, if you were making your first update
> today, make the serial number 2010092701.  I add on 2 digits at the end in
> case I need to make more than one change in one day.  Changing it 10 times in
> one day isn't likely, but just in case that isn't enough, I know *I* will not
> be making more than 100 changes in one day.  Serial numbers ALWAYS have to
> increase with each change.  That is the way other name servers know they need
> to update their information.  If the serial number is bigger than what they
> have stored, then they know they need to download the new information.  If you
> plan on updating the DNS information more than 100 times a day, you will need
> to give yourself some extra digits.  I hope this is of some help.

I think that the fine manual mentioned something about if one hundreds
edits were done in a single day, then it is time to go home and get
some sleep!

Dotan Cohen


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