[welterde]

In case of BGP it was possible since it's not a end to end communication protocol.

How exactly does TUBA solve the problem where ipv4-only host wants to communicate with a non-ipv4 host? This proposal solves none of the issues we are facing of IPv6. The RFC suggests some of the transitional technologies that are in issue with IPv6 today/the past: tunneling IPv6 over IPv4 (6in4, teredo, etc.), dualstack, NAT64 and other mapping, AAAA recrods in dns. But it doesn't get around the fact that you cannot fit more than 32bit of information into a 32bit address.

[kazen44]

also, in the case of BGP it is also possible because it is a protocol with a strict process around its use in the default free zone with a community of peers who all benefit from being interconnected and being able to exchange routes.

it is far easier to convince a couple of thousand organizations to modify their highly specialized infrastructure compared to end users and manufacturers who just want to use or create widgets which will do what is required.