GoDaddy NS related - one server two IP addresses
I read the godaddy + dns article and it looks cool. However I have one question.
I have a NS (ns1.foo.com and ns2.foo.com) both on the same server, but with different IP addresses. The howto describes how to setup nameserver with ispconfig installed on two different servers? Could someone please explain how to setup two nameservers on the same server, but with two IP addresses.
Also, the nameservers currently provide resolution for around 22 sites. How can I move the nameservers over to my new ispconfig-powered server without discontinuation in service for all those domains (some of which are owned/administered by others)?
For the record, the domain name used for the nameservers is used only for the nameservers and for nothing else.