Two comments: 1) Looking at crc.c, I don't think the code in question is big enough to be copyrightable. The FSF usually uses a 10-line limit, and my impression is that they are intentionally conservative here. The code is a couple of lines only.
2) Code from some RFCs is available under the BSD license or for smaller snippets, under fair use, via the IETF Trust. See http://trustee.ietf.org/faq.html /Simon -- To UNSUBSCRIBE, email to debian-bugs-rc-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org