dwepdump, no output and "-a" problem

h1kari,
Thanks for the very quick response time.
I've done more testing based on your suggestions I think you're
right in suspecting a problem with the driver of maybe the pccard
setup.  I tried the same two Prism cards in another FreeBSD 4.7
machine and prism2dump and dstumbler -o work just fine.  So I
know my Prism2 hardware (Netgear MA401 and Dlink DWL-650) are
fine.  It must be something in the wi driver or pccard setup
on this particular FreeBSD machine.

In reading my dmesg for wi0 I noticed something odd, I see this:
"wi0 watchdog timeout".  Here's the dmesg for wi0 after starting
and stopping prism2dump in port mode 5:
(using Netgear MA401)
wi0 at port 0x280-0x2bf irq 5 slot 1 on pccard1
wi0: 802.11 address: 00:30:ab:00:00:00
wi0: using RF:PRISM2 MAC:HFA3841 CARD:HWB3163-SST-flash
wi0: Intersil Firmware: Primary 0.03.00, Station 1.03.04
wi0: promiscuous mode enabled
wi0: watchdog timeout
wi0: watchdog timeout
wi0: promiscuous mode disabled

I'm guessing the watchdog timeout is going to lead me to my problem
but I'm not sure where to look next.  I've started trying to
compare the configs between the two FBSD 4.7 machines.  So far
I can see the wi0 pccards are using different resources.
working machine: wi0 at port 0x240-0x27f irq 3 slot 0 on pccard0
non-working "watchdog timeout" machine: wi0 at port 0x280-0x2bf
irq 5 slot 1 on pccard1

p.s. Can you tell me what "-F 1" in wicontrol does?  I don't
see it in the man for wicontrol.

Do you have any more suggestions?

Thanks,
Al.