"Temporary" since 1982. https://www.iana.org/assignments/protocol-numbers/protocol-numbers.xhtml https://files.mastodon.social/media_attachments/files/111/070/760/478/326/508/original/c05219ca0b89c421.png
@3ea13a3a just like Washington Dulles Airport’s midfield terminal! https://en.wikipedia.org/wiki/Dulles_International_Airport