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| General software and network General OS-independent software and network questions, X11, MTA, routing, etc. |
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8th March 2013
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FreeBSD's BPF data representation
Hi guys. I'm diggin some bpf stuff and i can't figure out, why there are 3 types of data representations: words, halfwords and bytes? I mean how can i know, which one is best to use? In some basic example, e.g. for packet capture, considering BPF's manual, i use for ETHERTYPE in the ethernet header a halfword representation, but for a IP address - word representation. Can somebody explain? 10x!
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