I've used dozens of VPS providers in the past, albeit 'low end' in this instance- they constantly change IP addresses because they're renting them, buying them, etc.

For IPv4 definitely a problem.

I maybe used around 100 VPS hosts, less well known ones beyong DO etc. I'd get a dozen IP change notices a year.

Case in point: https://lowendtalk.com/discussion/160162/aio-ip-related-ipv4...