I've been considering a failover setup using to WAN connections and have been investigating some options. I found some very interesting appliances made by Xroads Networks that essentially takes over as the authoritative DNS server and updates the DNS records for your domain on the fly as a WAN connection goes up or down. The appliances aren't out of line expensive but it seems like this could be done fairly easily with a Linux solution as well.<br>
<br>Here's a better description of how the process works: <a href="http://www.xroadsnetworks.com/ubm/technology/activedns.xrn">http://www.xroadsnetworks.com/ubm/technology/activedns.xrn</a><br><br>Didn't find much in my initial Google attempts but now "bindmon" seems like it basically does this. Is anybody using this or other technique for DNS failover?<br clear="all">
<br>-- <br>Donovan Niesen