Ethereal-users: [Ethereal-users] Bit test in a Display Filter

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From: Wes <wes_r@xxxxxxxxx>
Date: Sun, 28 Mar 2004 09:11:31 -0800 (PST)
Hello,

I noticed with release 0.10.3 Ethereal:

 "Display filters now support the bitwise and (&)
operator."

This sounds like it might allow me to do the binary
display filter I was looking for, but I haven't been
able to find any description or example how to use it.
I tried some variations like below, but it didn't seem
to work.

rtp.payload[4] and 2 == 0

I am not a programmer and I'm probably missing
something obvious.

Can someone provide any insight on what this feature
is
and how to use it?

Thanks,

Wes

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