zlacker

>>dredmo+(OP)
On the subject of the IP leaking: Note that IPv4 only has 2^32 addresses, and people can and do mass scan all of them (see here shodan.io). If your service is exposing any identifiable information (ie. if it's not completely blocking all non-cloudflare IPs) then it's fairly easy to find even if it's "unguessable".

>>ekimek+ye
That's an interesting side topic. What do services like Shodan do in an ipv6 world? Dumb brute force scanning seems unlikely.