Earlier quoted context omitted.
On the face of it, it sounds simple enough: special treatment when the IP address is an IETF-designated private IPv4 address (e.g. 192.168.x.y). Is there some reason this wouldn't work, that I haven't thought of?
I considered that, but I think at the moment there's no concept of IP address for web certificates, it's all based on domain names as far as I know. It doesn't mean it's not doable of course, but I could understand if it make people uneasy since it means that the same domain and the same certificate would behave differently depending on what it resolves to. It may be an interesting solution to consider though. That w…
A quick Google search shows various certificate authorities who will issue certificates for IP addresses.