Is this an OctoPi- or OctoPrint--related issue?

What is the problem?
Upon remoting into the OctoPi-imaged install of OctoPrint, I'm greeted with instructions on how to connect. The related URL for the IPv6 does not work as seen, for example, http://2600:8801:9908:a200:17ea:82c4:c397:e962

In order for an IPv6 address to resolve the port from the IP address, it needs an extra set of square brackets to differentiate where the IP ends and the port begins.

It sounds like the welcome text needs something more like http://[1:2:3:4:5:6:7:8] as the URL. I'm just not sure which repository wants the issue.

What did you already try to solve it?
Not having much experience with IPv6, I googled it.

Additional information about your setup (OctoPrint version, OctoPi version, printer, firmware, octoprint.log, serial.log or output on terminal tab, ...)
OctoPrint 1.3.8 running on OctoPi 0.15.0
Robo C2 with all their code removed except Marlin
OSX High Sierra 10.13.4, Safari 11.1

That would be OctoPi. Relevant lines are here and also here.

I'm not convinced that anyone purposely uses IPv6. I note that my Internet router seems to prefer it over IPv4 these days in discovery.

Thanks, btw.

Alright. It looks like someone's already addressed this in the devel branch.