Excellent explanation .
Because we are still migrating to the new domain for your project, everywhere you see nplb.ironbits.net, can be changed to your new domain of noprimeleftbehind.net.
The old address will still work so nobody has to run around and change all their client configurations.
Eventually, nplb.ironbits.net will go away, say in about a few months, so if you are starting up new, use the new domain name.
If you are stopping and starting clients, and you only have a handle full, you could use the new domain name instead.