tcpdump & wi driver interaction

I've noticed an interesting interaction between tcpdump 3.6.3 (FreeBSD
4.6) and the wi driver.

Specifically, when I bring the wi0 device online, as described in
ifconfig(8), I can see traffic on my local wireless segment; but only
one side of the traffic. I can see one side of the 'conversation' only,
however; I see the HTTP requests going out but I do not see the HTTP
replies, for instance.

When I do a quick 'wicontrol -i wi0 -p 3', followed by 'wicontrol -i wi0
-p 1', to return it to its original state, I can now see both sides of
the network traffic.

Has anyone else encountered this? Is there an explanation? Is this a bug
or a feature?


TIA,

-- richard

--

Richard A Childers/KG6HAC -- Senor UNIX System & Network Administrator
"Dont forget nothing." Maj Rogers, standing orders, 1st Ranger Bn, 1759



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