[Dnsmasq-discuss] Failover from preferred to less-preferred DNS servers with dnsmasq
phil at flamewars.org
Wed Aug 10 16:39:49 BST 2011
Thanks for your response!
On 8/8/2011, "Ed W" <lists at wildgooses.com> wrote:
>1) Give the head office DNS servers some effectively internet visible IP
>address and then set that address as your dns server
I'm not sure how this achieves the objective - the AD DNS servers will
now be available when the leased line is not, so my clients will
continue to try to use the private IPs for my services when I want them
to use the Internet-facing ones.
>2) Use OpenVPN or your favourite VPN software to tunnel into the head
>office over the internet.
This works but adds complexity and overhead to the network, potentially
reducing performance and reliability. A DNS-based solution would be much
>Personally I think this is overkill. Use whatever monitoring script you
>use to failover and have that tweak your resolv.conf.
This was actually the first idea I had before I started playing around
with dnsmasq configurations, and I forgot about it. Thanks for reminding
me. This is probably what I'll do.
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