I am taking a look at Discourse to see if it suits my needs. I’ve followed the instructions on the following and the installation seems to have gone OK, with one important exception.
After missing this initially (and spending too long noticing!), I observe that Discourse is listening on port 80 only on IPv6, not IPV4. I have no idea why. Here are the ports on which my droplet is listening.
As far as I know, this indicates all that is open on this server, so it doesn’t look like Discourse is failing to listen on IPv4 due to a conflict.
Any idea what might be happening here?