Hello, everybody!
We are really need ability to issue certificates for IP itself. We are developer of hosting automation panel. Our customers install panel on their servers. But actually we do not know any hostnames about customer. So we have only single way to get access to customer. We are using: https://10.0.1.xx for access to management interface. But self signed certificates is not security for this case because they could be hijacked and customer will not detect it.
So much another companies who offer routers / switches / CPE devices / security devices have really similar issue.
So we need some way to issue certificates for dedicated globally routable IPv4 addresses (IPv6 will be fine too). With this option we could secure all conversations between customer and our appliances.