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Date:	Sat, 12 Apr 2014 12:32:52 -0700
From:	Eric Dumazet <>
To:	Sharat Masetty <>
Cc:	chptx y <>,
	Linux Netdev List <>
Subject: Re: What causes these TCP packet getting lost in linux kernel

On Sat, 2014-04-12 at 12:35 -0600, Sharat Masetty wrote:
> Check /proc/net/netstat and /proc/net/snmp
> In netstat look for

The packet is not out of order, according to tcpdump.

Note that the receiver reacts to incoming packet, sending a DUPACK, so
its not a backlogdrop.

tcpdump trace is really incomplete, I asked tcpdump -vv but got nothing
from chptx, assuming this is a real name.

packet might be rejected because of a zero receiver window, who knows.

I might search in my basement this crystal ball I might have.

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