My guess is that if you got to look at the dhcp server, it would say
that you were sending slightly malformed packets.  Can you do a
comparison of a captured DISCOVER from all of your cards (plus others
on the network) and try to see the differences.  (a byte count might
be sufficient enough to see the problem)

See if you can compare what you find with what's mentioned in RFC2131
section 4.3.1 should help.

On 1/20/06, Dheeraj Reddy <dheerajr@gmail.com> wrote:
> Hello all.
>    I am trying to use an Airlink 101 card with the atheros superG
> chipset.  For some reason, I am unable to get an address using
> dhclient.
> # ifconfig ath0 nwid <SSID> nwkey 0x1234567890 up
> # dhclient ath0
>
> just keeps discovering.
>
> This is with current as of a couple of days ago.
>
> ath0 at cardbus0 function 0
> ath0: 11b rates: 1Mbps 2Mbps 5.5Mbps 11Mbps
> ath0: 11g rates: ......<< 1 - 54 Mbps >
> ath0: tuboG rates:  ... <6- 54 Mbps>
> ath0: mac 7.9 phy 4.5 radio 5.6
>
> Using tcpdump with E10MB as the link type shows a bunch of
> packets from other stations in the SSID. I can see my dhcp requests
> going through.. but get no responses. I have seen this with atleast
> two APs. ( a Cisco and a Netgear one)
>
> Any suggestions/debugging ideas ? I know that the server is fine since
> ral(4) and an(4) work just fine.
>
> --
> dheeraj
>