Fedora8 - Intel 4965agn card does not work correctly

Hi all,

I installed fedora-8 onto Dell Vostro 1400. We are trying to use the intel 4965agn card on this laptop in ad-hoc mode. 

1)The iwpriv command does not allow me to set the modulation scheme to 802.11a,b,g ( returns "mode" command not found).If I try "iwpriv wlan0" I only see that the commands param and get param are implemented. Here are the commands I ran:

 iwconfig essid "potato" mode ad-hoc

 ifconfig wlan0 addr 192.168.10.5

 ifconfig wlan0 down

 ifconifg wlan0 up

After I set the address of the card to 192.168.10.5 and try to ping it from another machine in the same ad-hoc network , it does not work.It looks like this card is not answering the ARP queries being sent out in the ad-hoc network.  Ping works if I try to ping the other direction first and
 then ping from the other machine to this machine.

2) I set

/proc/sys/net/ipv4/conf/wlan0/forwarding =1

 /proc/sys/net/ipv4/conf/wlan0/accept_source_routes =1 .

But it fails to forward any packet routed through it.

 

Does anybody have an idea of how to get the card to behave properly?.

 

Thanks,

Kiran