How does IPv6 win over IPv7, IPv8 and IPv9?
Recentlly I'm learning the history of the IP protocol, and find out during 1990s, there're IPv7(RFC 1475), IPv8(here I mean RFC 1621, not rencently suspicious vide-drafted document) and IPv9(RFC 1347).
How does IPv6 finally win over other protocols? And why is IPv6 extended to 128 bits? I found out in the early version for IPv6(simple Internet Protocol, RFC 8507), the address length is 64 bits.
Is there any collection for all those kind of historic discussions?