[finnigja]

Not hard, just different. Maybe the "harder" bit is actually remembering any one address.

My IPv6 connectivity tester at https://ready.chair6.net is still doing its thing, twelve years since https://news.ycombinator.com/item?id=2154124.

Looks like Hacker News has added support in five years since https://news.ycombinator.com/item?id=21382275.

[miyuru]

I built a bit similar simple tool which tracks failed HTTP domains.

https://v6check.miyuru.lk/

will add a link to your site on the failed domains page.

[remram]

What is the "IPv4 Literals" test?

[finnigja]

Haven't look at that code for a while, but IIRC it does a simple HTTP request then checks the returned HTML for anything that looks like a v4 literal, eg. http://174.136.109.18.