From owner-freebsd-questions@FreeBSD.ORG  Fri Mar 28 17:10:13 2008
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Date: Fri, 28 Mar 2008 13:09:20 -0400
From: Jerry McAllister <jerrymc@msu.edu>
To: Kevin Oberman <oberman@es.net>
Message-ID: <20080328170920.GE8233@gizmo.acns.msu.edu>
References: <B56F28A5-D4FB-4238-9EA2-9A7127F10488@sicha.net>
	<20080328164828.F14814500F@ptavv.es.net>
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Cc: Robert Jesacher <jessy@sicha.net>, daniel@dgnetwork.com.br,
	freebsd-questions@freebsd.org, freebsd-net@freebsd.org
Subject: Re: Understanding Flags, Refs, Use, Expire in Routing Table
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On Fri, Mar 28, 2008 at 09:48:28AM -0700, Kevin Oberman wrote:

> > From: Robert Jesacher <jessy@sicha.net>
> > Date: Fri, 28 Mar 2008 16:39:31 +0100
> > Sender: owner-freebsd-net@freebsd.org
> > 
> > Hi Daniel,
> > 
> > you find mostl of you questions answered in "man netstat" (the  
> > relevant passage is posted below)
> > The missing part is the expiry, which IMHO are the seconds, the ARP  
> > entry is valid (after this time a new arp request would be issued)
> > 
> > I hope this is the information you needed.
> 

Isn't everything?!
> It makes following a thread really hard. It's all (mostly) Microsoft's fault!
> > Why?
> > > I wish people would stop top-posting!

> 
> The Expire entry is the result of FreeBSD's unfortunate co-mingling
> network layer routing information with layer 2 ARP information. The only
> entries with "Expire" values are actually ARP entries. (Note the MAC
> address os "Gateway".)
> 
> Expire is in seconds remaining until the entry expires and is no longer
> used.
> -- 
> R. Kevin Oberman, Network Engineer
> Energy Sciences Network (ESnet)
> Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab)
> E-mail: oberman@es.net			Phone: +1 510 486-8634
> Key fingerprint:059B 2DDF 031C 9BA3 14A4  EADA 927D EBB3 987B 3751