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Date:      Tue, 26 Oct 1999 21:11:52 -0700
From:      Jason Thorpe <thorpej@nas.nasa.gov>
To:        itojun@iijlab.net
Cc:        jayanth <jayanth@yahoo-inc.com>, Alex Rousskov <rousskov@ircache.net>, freebsd-net@FreeBSD.ORG
Subject:   Re: TCP throughput vs number of aliases 
Message-ID:  <199910270411.VAA08719@lestat.nas.nasa.gov>

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On Wed, 27 Oct 1999 09:56:57 +0900 
 itojun@iijlab.net wrote:

 > 
 > >The code in ip_input.c seems to step through the list of all
 > >ip addresses for that interface.  It is probably stepping thro' all the
 > >alias addresses
 > >I wonder if that is the problem.
 > 
 > 	One possible solution for this is implemented in KAME IPv6 stack,
 > 	for IPv6 only.  We may want to port that part to IPv4 if it is common
 > 	to have more than 500 interface addresses onto a host.

Thor Simon solved this problem in NetBSD quite some time ago by putting
in_ifaddrs in a hash table.  His application was, in fact, a web server
with hundreds of IP addresses.

        -- Jason R. Thorpe <thorpej@nas.nasa.gov>



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