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Date: Thu, 01 Jun 2006 03:56:16 -0600
From: Scott Long <scottl@samsco.org>
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To: Danny Braniss <danny@cs.huji.ac.il>
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Cc: freebsd-hackers@freebsd.org
Subject: Re: iSCSI/sendto(...)
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Danny Braniss wrote:

> Hi,
> 	on a fairly new 6.1-stable, and probably before, once in a
> blue moon, sendto return error 64 (EHOSTDOWN?). but the packet seems to have
> been received by the target, since i get a response, and further more,
> everything keeps on working.
> 
> what is error 64?
> 
> danny
> 
> 

EHOSTDOWN comes from the ARP layer of the IP stack, and would be
consistent with the host either getting no arp response or rejected
responses from the target.  It would be useful to run tcpdump+ethereal
on your connection to see what is really going on.

Scott