[Samba] Sticky bit

[ZyXEL training, Moscow]

Hi all.

I configured a samba share:

;-----------------------------
[soft]
      comment = Software
      browseable = yes
      path = /mnt/soft
      writable = no
      write list = nikitin stiven @root
      public = yes
      create mode = 0664
      directory mode = 1757
;-------------------------------------

Now users create files with -rw-rw-r-- permissions and
directories with drwx-r-xrwx

My question is: why doesn't samba set a sticky bit on
directories?

Any hints appreciated.
TIA

--
Alexey A. Nikitin