LetsEncrypt + DNS challenge + DNS provider with letsencrpyt compatible API for modifying records works fantastically well for getting "real" https/SSL working f

LetsEncrypt + DNS challenge + DNS provider with letsencrpyt compatible API for modifying records works fantastically well for getting "real" https/SSL working for private IP addresses, the automatic renewals make it largely set and forget with very little config or setup required. I've had working validly signed SSL on literally all my private home self-hosted services and load-balancers internally for years this way. It also easily switches to a production like setup if you later did decide to host something on the public internet.