At the FreeBSD vendor summit, it was revealed that modern modems are a supported use case on FreeBSD via the extremely reliable u3g driver. Almost no one knows this in our social spaces. People ask and we've all been saying "I wish", because the HW notes say nothing in Misc Networks, grepping for "cellular" or "modem" shows nothing, and `apropos modem` or `apropos cellular` show nothing. The Misc networks section of the hardware release notes is usually empty. Attempt to resolve both of these issues by moving the cellular modem driver from Ethernet to Misc Networks in the Release Hardware Notes.
Related, fixing this on the other side of the equation (and I'm happy to move that here if preferred): https://github.com/freebsd/freebsd-src/pull/1519