Q:

Nether Portal never goes to Nether

I have a FTB Unleashed server, which I'm in the process of setting up before going public.  Part of that setup is checking the Nether etc. So I built a Nether portal and strangely all it does is pass me around Nether Portals in the Overworld.
What have I done wrong?
The DIM1 folder is missing - so I suspect some generation is supposed to happen?

A:

In server.properties make sure Nether is enabled

