Problems with nsd4 after disabling IPv6


Hi there!

I was migrating my MiaB setup from one vServer to another and spent some hours to finde out the problem why the nsd4 process do not wanted to start. Every time I had the following error:
Public DNS (nsd4) is not running (port 53).

The problem was that I wanted to disable IPv6 (as it is not recommended for now, right?) and added some lines to the /etc/sysctl.conf file. With my first VPS it was not a problem: there I was able to disable IPv6 from the control panel.

Now I have 2 questions:

  1. Is it no problem that my VPS has an “unused” IPv6 because of security aspects or should I try to contact my hosting provider and ask to disable it?
  2. Why the disabling of IPv6 on Ubuntu did not work and “ruined” my whole MiaB setup?



In the meantime I asked my hosting provider to disable IPv6, but it’s something that is not provided. So what would be the best solution to disable IPv6 and not to break my MiaB setup?