NetBSD. Licensing. Appears to be old (non-revised) BSD license... certainly the INSTALL.txt file for 1.6 has lines at the beginning of the ungodly long section for the NetBSD project (in two forms, no less!) Pardon me while I sink into despair of ever untangling the mess, even if we can use it (is the old BSD license DFSG-non-free?)
the biggest problem isn't that TNF has a "clause 3" but that N contributers also do. however, that list is maintained in distrib/notes/legal i think so you can easily get a list of "clause 3"'s in the netbsd source tree. unfortunately, these aren't linked to the sources they refer to cuz in some cases this list is 100's of files across the whole tree. it was my understanding the old 4 clause UCB license was DFSG happy, anyway. .mrg.
