[sodality2]

Unfortunately residential networks usually don't have static IP's so the IP changes on reboots. Updating the DNS record every time would probably be a PITA.

[27100974]

Couple of notes: You can use a DNS updater like this one: https://github.com/timothymiller/cloudflare-ddns

The bigger problem would be if your ISP implemented CGNAT.

[ekianjo]

Easily taken care of by duckdns for example

[sodality2]

Then I can't hook it up to a real domain like google.com, just a subdomain of whatever site is running it.

[skeletonjelly]

And then you have to hope your ISP doesn't use CGNAT