Mounting SMB shares from NAS in Linux

When mounting  SMB shares in linux from a NAS box I got this error:

mount error 12 = Cannot allocate memory

I discovered that the problem is the NAS device's implementation of SMB requires the "nounix" option to be specified.

smbmount //IP_of_NAS/share_on_nas /local/mountpoint -o nounix

Hope this helps someone.