http://marek.mahut.sk/blog Tue, 06 Jul 2010 14:46:09 +0000 http://wordpress.org/?v=2.9.2 en hourly 1 http://marek.mahut.sk/blog/2009/01/06/how-to-fix-wrong-dns-serial-number/ http://marek.mahut.sk/blog/2009/01/06/how-to-fix-wrong-dns-serial-number/#comments Tue, 06 Jan 2009 14:57:07 +0000 marek http://marek.mahut.sk/blog/?p=305 Did it ever happen to you by mistake to add one additional digit into dns serial number? Ooops! Now, how to fix it?

1. Increase the serial number to (2^31) – (correct serial number) and reload named. For example 2^31-2009010602 = 138473046. As DNS serial numbers are signed integers, this make server thinks that it’s a negative number.
2. Set the serial number to 0 and reload.
3. Set the correct serial number and reload.
4. Voila!

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