FreeNAS 11.1-U6 CIFS Problems

If like me you upgraded FreeNAS to 11.1-U6, then you’ve likely run into issues due to SMB1 being disabled. See below link for the particulars:

FreeNAS 11.1-U6 Release Notes

Changes in SMB for 11.1U5 to 11.1U6?

Mounting cifs: “Operation not supported”