[GLLUG] [WLUG] DHCP question

[Karl Schuttler]

You could always just cache DNS locally, or keep around some other DNS
servers IP addresses commented for when times are rough (opendns.org
for instance).

On Sun, Nov 23, 2008 at 6:41 PM, Tom Allison <tom at tacocat.net> wrote:
> This might sound dense, but I've a DNS/DHCP question that I'm just not sure
> what the answer is.
>
> My firewall has a DHCP client connection to my ISP that gives me their
> subnet and their DNS servers.
>
> This same box gives me the DHCP server and DNS information for my subnet.
>  The DNS server uses forwarding to hit the ISP DNS server for lookups.
>
> I was burned once by the ISP changing their DNS server IP and Names. The DNS
> configuration isn't built out from the DHCP connection, it's hard coded in
> my dns configuration files.
>
> Is there some reasonable way to keep these two in sync?
> Otherwise, is there some approach to semi-automate the identification and
> correction?  I suppose I could always write a perl script to do this.  But I
> can't imagine I'm the only one in the world to want to do this.
> --
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