While "man mtw" delivers a manpage, "man if_mtw" is empty/nonexistant. Checking: man if_igb(4) is present. man if_em(4) is also present, as well as "man em" and "man igb".
A commit in branch main references this bug: URL: https://cgit.FreeBSD.org/src/commit/?id=f468366ecc8c55f96e5ef0f35c1973989ba6d3d5 commit f468366ecc8c55f96e5ef0f35c1973989ba6d3d5 Author: Mark Johnston <markj@FreeBSD.org> AuthorDate: 2025-02-07 19:40:32 +0000 Commit: Mark Johnston <markj@FreeBSD.org> CommitDate: 2025-02-07 19:50:12 +0000 mtw.4: Fix a couple of nits - Only install it when MK_USB is set to "yes", like we do for other USB NIC drivers. - Create a hardlink named if_mtw.4, like we do for other NIC drivers. PR: 284638 Fixes: c14b01624261 ("mt7601U: Importing if_mtw from OpenBSD") share/man/man4/Makefile | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)