http://ftpfaudev4triw2vxiwzf4334e3mynz7osqgtozhbc77fixncqzbyoyd.onion/ripe.net/rfc/rfc8994.html
In the context of this document, unsecured
identity information of a node typically consists of at least a device model and/or type and a
serial number, often in a vendor-specific format. See sUDI and LDevID . ¶ ULA (Global ID prefix): A Unique Local Address is an IPv6
address in the block fc00::/7, defined in " Unique Local IPv6 Unicast Addresses " [ RFC4193 ] .