The following reply was made to PR kern/34799; it has been noted by GNATS.

From: Julian Coleman <jdc@coris.org.uk>
To: gnats-bugs@NetBSD.org
Cc: 
Subject: Re: kern/34799: IP Filter does not work correctly with gem(4) when hardware chec
Date: Wed, 19 Dec 2007 10:05:39 +0000

 Hi,
 
 >  The problem occurs with both UDP and TCP.  If I enable only TCP
 >  checksums, I still see the problem with TCP packets, e.g.:
 
 >  The problem apparently affects (or affected) the same chip on Solaris,
 >  judging from the IP Filter FAQ entry I found on the subject:
 >  http://www.phildev.net/ipf/IPFsolaris.html#solaris15
 >  
 >  This problem only happens with IP Filter.  If I use OpenBSD's PF, UDP
 >  and TCP packets pass out the gem interface without issue.
 
 Thanks for the extra information.  I wondered if it was only UDP, as the
 name lookup failyre:
 
   ping: Cannot resolve "www.onetbsd.org" (Host name lookup failure)
 
 would be a symptom of UDP problems.
 
 I'm close to getting my fibre card working, so I'll see if I can reproduce
 and/or spot the problem here.
 
 Thanks,
 
 J
 
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