Tcpdump says I'm getting incomplete packets; how to find the culprit?

Dan Nelson dnelson at
Mon Dec 27 17:30:51 PST 2004

In the last episode (Dec 27), Doug Lee said:
> I use FreeBSD 4.10-STABLE as a nat/firewall box.  When connected to
> DSL, I got fast web surfing but many gaps in incoming audio traffic
> using some audio software.  I switched to cable, and now audio works
> great, but at least when I pop open pages in Lynx right on the
> FreeBSD box, I often experience five-second delays--one at "202 OK"
> and one or more during the loading of the page.  Tcpdump reports that
> I'm receiving incomplete packets, so I assume the five-second delays
> are timeouts on my box before a request for packet resends.

What is tcpdump printing that makes you think that packets are
incomplete?   If you are manually decoding packets by looking at
tcpdump -X output, make sure you also use -s 0 to grab the entire

> Please Cc me on replies (I hope this is not rude to ask; I'm just
> afraid of missing answers).

That's the standard on these lists.

	Dan Nelson
	dnelson at

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