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by szszrk 363 days ago
> go do a survey of all the code out there, and see how much of it supports IP address certificates.

I've been doing that for years on onprem (~60% old "enterprise/legacy" ~40% modern stuff) and never seen anything that doesn't support it. YMMV, but if all I work with supports it, I won't complain in vain.

> those parts are going to choke if you just blindly go and stick IP addresses in https:// URLs.

I did many times, seems that legacy heavens were always kind to me in this regard.

> something you're going to want to change all the time, like an IP address

That's a personal assumption as well. If your architectures change IPs all the time, OK. Ones I worked with didn't. Always had plenty of components with IPs that didn't changed in a decade or two. Even my two previous local ISPs I had gave me "dynamic public IP" and kept them for many years. For some companies changing an ip of their main firewalls/load balancers or VPN servers is unthinkable.

Even on my last project on Public Cloud, the first thing I did was to make sure public IPs won't be dynamic (will survive recreation of services) so I don't have to deal with consequences of my corporate client endpoints and proxies flushing DNS caches randomly. (don't ask me why, but even huge companies still use proxies on a large scale. Good luck with figuring out when such proxy invalidates your DNS record).

> in the IPv4 space

IPv6 is here. Your printer and light bulb will want a cert as well.