UCSF and UCB (as well as all the UC campuses and enterprises) are technically the same legal entity, incorporated by article 9 section 9 of the California constitution. Strange that they signed a license, when I worked for the regents we called them MOUs if it was a "contract" with another part of ourselves.
When I started working for UCSD and found out we were licensing BSDi for some boxes I was sort of confused, like why don't we get that for free?