I have a /56 at the datacenter and Google Fiber gives me something like a /64 or something so I have full IPv6 connectivity everywhere. For the most part this is fine, but I've noticed the Internet is 'less reliable' on IPv6 and so in my head I still feel like it's a little iffy. There are times where a AAAA record points to an IP that doesn't respond, but the A record responds and so on. I just think it's the same as my blog's Gemini protocol server. I don't use it and offer it for fun but it's a best-effort basis. If it went down for months I wouldn't notice.