hiden essid problem

[zhaoming]

I want to hide the essid of my Hostap.
I use the following commands:
#iwpriv wlan0 enh_sec 1

then the system show:
<mapping sub_ioctl enh_sec to cmd 0x8BE0-30>
Interface doesnt accept private ioctl.....
enh_sec(8BE0):operation not supported

I use redhat linux-2.4.20-8 and hostap-driver-0.2.0.
The client is Win2000 with a LINKSYS WMP11 NIC.
By the way,the Hostap works well.
Thanks for your reply.
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