[Winpcap-users] V4.0A - filter syntax

Guy Harris guy at alum.mit.edu
Tue May 30 00:56:02 GMT 2006

On May 29, 2006, at 2:24 PM, Marcel van Lieshout wrote:

> Two filters in V4.0A:
> "(ether dst 01:02:03:04:05:06) or (ether broadcast)"
> "ether dst 01:02:03:04:05:06 or ether broadcast"
> Both compile succesfully, but only the second one gives the  
> expected result

They compile to the same *filter code* with both top-of-tree libpcap  
CVS and libpcap 0.8.3 on Mac OS X, so, at least with those versions  
of libpcap, they'd have to give the exact same result.

What do

	windump -d "(ether dst 01:02:03:04:05:06) or (ether broadcast)"

	windump -d "ether dst 01:02:03:04:05:06 or ether broadcast"

print?  If they print the same thing, then it's pure accident that  
the latter gave the expected result.

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