DHCP and Dynamic DNS
chris_cox at stercomm.com
Thu May 8 22:41:32 UTC 2008
On Thu, 2008-05-08 at 11:20 +0100, Simon Hobson wrote:
> Roger Lestru wrote:
> >We are using dhcpd and bind from ISC. Our network is spread
> >geographically, and we have a number of dns and dhcp servers. Our
> >dhcp servers are dynamically updating our bind primary server, with
> >dhcp client updates, and that is working fine for the most part.
> >The issue that we have, is when a wan link goes down, or when a
> >remote dhcp server cannot contact the primary dns server, then the
> >dns update fails.
> >I'm wondering if there is a way around this with dhcpd? Is it
> >possible to queue the dns update, or something similar?
> No, there are no facilities to deal with this.
> The only way I could think of doing it would be to make sure that the
> primary for any zone is on the same network as the DHCP server(s)
> that update it - that way at least the primary could get updated and
> slaves would follow when the link was back up.
> Failing that, for adding records related to a new lease, the server
> will retry next time the client renews.
I was going to recommend a shorter lease time as a potential
"somewhat" fix. Would that help?
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