CIFS mount error 112 Host is down

SMB 버전 불일치 → vers= 지정:

mount -t cifs -o vers=2.0,username=USER,password=PASS //server/share /mnt/point

# /etc/fstab
# //server/share /mnt/point cifs vers=2.0,username=USER,password=PASS 0 0