mount_smbfs(8): support for SMBv3.02?

[Edward Tomasz Napierała]

On 0303T1047, O. Hartmann wrote:
> Does FreeBSD's mount_smbfs(8) support for Microsoft's SMBv3 protocol introduced
> with Windows 8 and Windows Server 2012/R2?

No, it only supports the obsolete SMB1 (aka CIFS) protocol.  Since SMB2
is a completely different protocol, supporting it properly pretty much
requires implementing it from scratch.  SMB3 is one of the SMB2 revisions
and thus is backward compatible with SMB2.