On Sat, Apr 12, 2014 at 09:38:03 -0400, Chuck Anderson cra@WPI.EDU wrote:
You cannot rely on DNS2 and DNS3 to be queried UNLESS DNS1=127.0.0.1 fails to respond. This might be a way to mitigate failure of the local caching resolver process, but it is not a way to ensure the ability to resolve internal names from the corporate nameserver. The way to ensure the latter is to configure the local caching resolver to forward to the DHCP-provided nameservers rather than becoming a full iterative resolver.
If they do spilt horizon DNS using a zone that can be found normally, things will still work. If they use zones that can't be found that way, then you can make an exception for that zone, but still use iteration for other stuff.