rfcview.el on RFC4021 does its fontifying and linking of the table of
contents only up to the end of the first page (item 2.1.16), where I
hoped the continued contents 2.1.17 onwards on the second page would get
the same treatment.
I suspect the author's name "G. Klyne" at the bottom of the first page
may match the `header-re' but is not a section heading and not the end
of the table of contents. `headerfooter-re' seems to match that footer
correctly, so it's hidden. Perhaps header-re matches within the footer
(or maybe any hidden bits) should be ignored or skipped or something.