Second paragraph of Section 28.10 of FreeBSD Handbook:
On FreeBSD, the Samba client libraries can be installed using the net/samba-smbclient port or package. The client provides the ability for a FreeBSD system to access SMB/CIFS shares in a Microsoft® Windows® network.
The net/samba-smbclient port or package does not exist in 11.1-STABLE r331749 amd64.
A `pkg install samba-smbclient` also fails with an unknown package.
A commit references this bug:
Date: Thu Feb 6 19:30:05 UTC 2020
New revision: 53872
Upgrade Samba references
Upgrade samba package
Upgrade samba wiki url
Add https to samba web
Submitted by: email@example.com
Patch by: carlavilla@
Approved by: bcr@(mentor)
Differential Revision: https://reviews.freebsd.org/D23520