I see, thanks for the explanation. One follow-up question: Why is the designation "6to4" rather than "IANA"? I would have expected the latter, as 2002::/16---similarly to the individual parts of 2001::/23---is listed under IANA's IPv6 Special-Purpose Address Registry. Thanks in advance, Lars [1] https://www.iana.org/assignments/iana-ipv6-special-registry/iana-ipv6-specia... On 02.08.21 16:56, Valdis Klētnieks wrote:
On Mon, 02 Aug 2021 11:57:54 +0200, Lars Prehn said:
Is there a reason why the status of 2002::/16 in IANA's IPv6 unicast assignments list [1] is ALLOCATED (with '6to4' as designation and the note field indicating reservation) rather than RESERVED? It can probably be moved back to 'reserved' once we're *sure* that 6to4 has finally been stamped out, never to return. But I'm sure that *some* ISP or company out there is still using it as their main strategy for migrating to IPv6.