self-hosting culture is doing a quick refresh on your fedi timeline as you walk out the door to a cafe so you can be sure your ISP didn't change your IP since your last DNS update so you can SSH into your home server to get some work done from the cafe.
@technomancy I've always wondered, how do you become your own ISP? Do I have to convince some university that the wire that comes out of their building and into my home is assigned a particular IP address or something?
@JordiGH with ipv4 exhaustion it's surely a lost cause; faster to just wait for everyone to switch to ipv6 where this isn't a problem
@technomancy I mean, either way, where do I plug this wire into?
@JordiGH my vague understanding is that most ISPs connect to backbone and are reselling access to that; the larger ones own some of the backbone infrastructure and the smaller ones pay for access to it. apparently my provider (CenturyLink) is a Tier 1; I didn't realize that.

https://en.wikipedia.org/wiki/Internet_backbone
Internet backbone - Wikipedia

@technomancy getting a static ip is close to impossible these days I guess...

@technomancy If you want, I can share the dynamic DNS thing I put together. Either it works perfectly, or my home IP hasn't changed in several years.

It's extremely jank, as one might expect. And you have to host your own DNS on some machine with a static IP.

@ieure I'm actually using afraid.org to host the DNS, and it works nicely; I just screwed up the cron job that's supposed to update it, so I have a low level of trust in my overall setup.

I have the same problem of "I think it's working, but I won't know until the ISP changes my IP so ¯\_(ツ)_/¯" which isn't a great feeling but whatever.
FreeDNS - Free DNS - Dynamic DNS - Static DNS subdomain and domain hosting