ZeroTier 6PLANE and RFC4193 address calculation

ztv6.md

ZeroTier IPv6 Auto-Assign Addresses

https://www.zerotier.com/manual.shtml#2_2_3

• A network ID is 16 hex digits (9bee8941b5de0691)
• A node ID is 10 hex digits (1234512345)

ZeroTier RFC4193 (/128 for each device)

• fd9b:ee89:41b5:de06:9199:9312:3451:2345

ZeroTier 6PLANE (/80 routable for each device)

• fc2e:308f:d012:3451:2345:0000:0000:0001

The RFC4193 is simpler

Something like:

function toRfc4193Ip (networkId, memberId) {
  return `fd${networkId}9993${memberId}`.match(/.{1,4}/g).join(':')
}