From mboxrd@z Thu Jan  1 00:00:00 1970
From: Eric Dumazet <eric.dumazet@gmail.com>
Subject: Re: [RFC] tcp: use order-3 pages in tcp_sendmsg()
Date: Thu, 20 Sep 2012 19:43:51 +0200
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Cc: Vijay Subramanian <subramanian.vijay@gmail.com>,
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To: Rick Jones <rick.jones2@hp.com>
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On Thu, 2012-09-20 at 10:10 -0700, Rick Jones wrote:
> On 09/19/2012 10:37 PM, Eric Dumazet wrote:
> > loopback is lossless, so its always surprising we can have TCP
> > retransmits on this medium ;)
> 
> Is it lossless?
> 

It is lossless, yes.

But packets can be dropped by TCP stack for various reasons, including
reordering and retransmits.