Thank you! (I have edited my link to use yours.) The link I originally had went bad due to the renaming from “draft-ietf-iab-case” to “draft-iab-case”, so I a

Thank you! (I have edited my link to use yours.) The link I originally had went bad due to the renaming from “draft-ietf-iab-case” to “draft-iab-case”, so I assumed that the document had somehow vanished, and changed to an archive.org link. Thank you for pointing me to the correct link again!