> Using ULA … the network side of our private internet space is only 6 characters How do you fit the fixed 8-bit ULA prefix (fd00::/8) plus the 40 random bits

> Using ULA … the network side of our private internet space is only 6 characters How do you fit the fixed 8-bit ULA prefix (fd00::/8) plus the 40 random bits you're supposed to use for the Global ID (per RFC 4193) into six hex characters? It should be at least 12, e.g. fdXX:XXXX:XXXX::/48. As for remembering addresses, yes, just use (m)DNS. You can even set up an mDNS Discovery Proxy[0][1] so that devices which don't support mDNS themselves can resolve the names via regular unicast DNS. [0] https://www.rfc-editor.org/rfc/rfc8766.html https://www.rfc-editor.org/rfc/rfc8766.html [1] https://github.com/mkuron/mdns-discovery-proxy https://github.com/mkuron/mdns-discovery-proxy