https://datatracker.ietf.org/doc/draft-ietf-ngtrans-6bone-ptla/00/
draft-ietf-ngtrans-6bone-ptla-00 - 6BONE pTLA and pNLA Formats (pTLA)
This memo defines how the 6bone uses the 3FFE::/16 IPv6 address prefix, allocated in RFC 2471, "IPv6 Testing Address Allocation", to create pseudo Top-Level...
draftietfpnlaformats
https://datatracker.ietf.org/doc/html/draft-vg-ngtrans-tsp-01
draft-vg-ngtrans-tsp-01
Tunnel Setup Protocol (TSP)A Control Protocol to Setup IPv6 or IPv4 Tunnels (Internet-Draft, 2002)
draftvgtsp