It's sometimes – not always – necessary to build a ported kernel module from source, after a minor update to the operating system. It's sometimes necessary to build a ported kernel module from source, after simply installing (not updating) the OS. Recent <https://github.com/freebsd/freebsd-src/commit/9051987e40c5a1f2396c5ceecff119fb4da28160#diff-7a99811ebf6b6268a2581fcf050df0a2c325fdbf1c02481dad16afd38f4bd6a1> on the main branch (for CURRENT) was an extraordinary change. From the commit message: > … Out-of-tree kernel modules will need to be rebuilt. ---- As far as I can tell, <https://docs.freebsd.org/en/books/handbook/ports/> does not yet cover the commonplace use cases. Elsewhere in the FreeBSD Handbook, parts of <https://docs.freebsd.org/en/books/handbook/cutting-edge/#makeworld> are misplaced; should probably be moved to a new chapter. From <https://old.reddit.com/r/freebsd/comments/15gssd3/-/jvpfm8h/?context=1>: > - you're packaging and installing a port > > - you're neither updating, nor upgrading, the operating system. > > Other problems around this subsection: > > 1. the first sentence of > <https://docs.freebsd.org/en/books/handbook/book/#updating-src-preparing> > begins with direction to read /usr/src/UPDATING, which does not exist > because the copy of the source code has not been obtained (disorderly) > > 2. then updating before obtaining (again, disorderly) > > …