0637b12b13
Commit 0b4f2ab0e913 fixes the krpc so that it can use TLS version 1.3 for NFS-over-TLS, as required by the draft (someday to be an RFC). Since FreeBSD 13.0, 13.1 use TLS version 1.2 for NFS-over-TLS mounts, this command line option may be used so that mounts from 13.0, 13.1 will still work. Without the command line option, only TLS version 1.3 mounts are permitted. The man page update will be a separate commit. MFC after: 2 weeks