"reset" a serial number

[Mark.Andrews at nominum.com]

> > See http://www.isc.org/products/BIND/docs/config_hints.html
> >
> > 2999041401 -> 851557752 -> 2000052400
> config_hints.html says addition, but this is subtraction. I don't quite
> understand. What does adding 2147483647 to the serial do?

	It is an addition.  Serial numbers are cyclic modulus 2^32.
	2147483647 (2^31-1) is the largest forward step you can make
	with a 32 bit serial number.

	(2999041401 + 2147483647) % (2^32) = 851557752

	Mark
> 
> >
> > Note after each transition wait for the slaves to catch up.
> > Also if the slaves are really old BIND servers the first
> > transition will fail.
> >
> > Mark
> >
> > > Is it possible to reset a serial number? I always use CCYYMMDD## for a
> > > serial number but some dumbass went and used a "CCYY" well into the
> > > future. I want to be able to "reset" this back to a sane date.
> > >
> > > current serial # 2999041401
> > > preferred serial # 2000052400
> > >
> > > --
> > > Mark Drummond|ICQ#19153754|mailto:mark.drummond at rmc.ca
> > > UNIX System Administrator|Royal Military College of Canada
> > > The Kingston Linux Users Group|http://signals.rmc.ca/klug/
> > > Saving the World ... One CPU at a Time
> > >
> > > Please excuse me if I am terse. I answer dozens of emails every day.
> > >
> > >
> > --
> > Mark Andrews, Nominum Inc.
> > 1 Seymour St., Dundas Valley, NSW 2117, Australia
> > PHONE: +61 2 9871 4742                 INTERNET: Mark.Andrews at nominum.com
> >
> >
> >
> 
--
Mark Andrews, Nominum Inc.
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: Mark.Andrews at nominum.com