It does but I can't say how frequently. My IPv4 address has only changed 7 times since 2012. My IPv6 record has changed once this year when I shut down my modem for an extended period of time.

I use http://freedns.afraid.org/ to manage my DNS. They support IPv4 and IPv6 with domain linking so you can update all your DNS records with 2 calls (one for IPv4 and one for IPv6). This can be done with wget via a cronjob on your web server or in most routers these days. If you use their premium tier you can use stealth records and wildcard DNS.

Just remember to set your TTLs on your A records to something low like 60 seconds. And don't host anything mission critical.

Thanks. I am very much interested in making a similar setup of my own on a Raspberry Pi. Do you recall what were the IPv6 issues with Rasbian? Also, do you have any concerns about potentially going against Comcast policies which appear to prohibit running servers?

I guess I should rescind my comment about Raspbian because I haven't had any major issues since the Jesse release and I doubt anyone is even going to use that with the Stretch release out.

I had a lot of issues with Raspbian prior to Jesse just failing completely to get an IPv6 address from the Gateway and not being able to resolve anything.

I've been running Pi.Hole and OctoPi on Jesse for at least 6 months with only minor issues that aren't the distro's fault but the applications. OctoPi doesn't even configure the HTTP Server so IPv6. Pi.Hole listens for HTTP requests and responds with errors.

I installed Stretch on a Pi and setup a Ubiquiti Controller a few weeks ago and IPv6 works flawlessly with it.

\* Regarding Comcast's policies, I have never run into an issue with them and I've been running servers for over a decade. That being said, mine are personal use, low traffic, and not business related.