I don't remember the exact details, but I used to have a Vultr VPS (I think the smallest they had, for something like $2.50/month) for a few years running OpenBSD. One day I noticed IPV6 had stopped working, so I emailed support after a while because I wasn't sure if I had broken it during an upgrade a few months before or not (I don't ever really specifically use IPV6). Anyways, got a super detailed reply back from support with the exact cause / how to fix it that was specific to OpenBSD. I was pretty surprised they had someone replying to emails from a $2.50/month customer who was actually knowledgeable about a fairly niche OS!