Why is my nameserver IP address not changing?

If you have a domain that you use as a nameserver (instead of using your domain name provider name servers), then you will need to maintain the IP address of that nameserver.

You can (and should) define your nameserver IP address in your zone. This is fairly straight forward. Simply define the ns1, ns2, ns3, etc. as a regular address and also mark them as NS entries:

  [...]
            NS    ns1.m2osw.com.
            NS    ns2.m2osw.com.
  [...]
  ns1       A     69.55.233.23
  ns2       A     64.166.38.38
  [...]

Now that is good, but it is not sufficient because the nameserver IP addresses have to be defined in the TLS and your nameserver has no authority on that one. So you have to also edit your nameserver IP addresses at your domain name provider. Look closely and you will find it, it is there!