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A comment on Reclaiming IPv4 Class E's 240.0.0.0/4. Parent comment

Re:Reclaiming IPv4 Class E's 240.0.0.0/4 by mprovost on Tuesday May 28, 2024 @12:47PM (#40502716)
It's not the case that there were no alternative designs at the time that v6 was proposed. RFC 1385 described a backwards compatible Extended Internet Protocol which used IP Option headers to stuff in extra addressing space.

https://datatracker.ietf.org/doc/html/rfc1385

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Re:Reclaiming IPv4 Class E's 240.0.0.0/4 by p_l on Tuesday May 28, 2024 @05:00PM (#40505567)
Still deals with the mess that was BSD Sockets preventing forward compatibility.
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