The following reply was made to PR kern/27042; it has been noted by GNATS.

From: List Mail User <track@Plectere.com>
To: gnats-bugs@NetBSD.org
Cc: darrenr@NetBSD.org, track@Plectere.com
Subject: Re: kern/27042
Date: Mon, 21 Feb 2005 16:14:59 -0800 (PST)

 	To add a data point.  The exact same problem also occurred
 under IPF 3.x, but (for me at least) seems fixed as of IPF 4.1.5 (I
 am running 4.1.6 on a few machines, but none using similar rules).
 Also, forIPF 3.4.x any use of return-icmp-as-dest(xx) also caused
 checksum problems;  Usually, but not always the checksum was just
 set (or probably *not* set) to zero for those cases (I still have
 one machine running 1.6ZL w/ IPF 3.4.29 where I can see both of
 these problems - fortunately the next hop is a Siemens/Efficient
 Speedstream router which recognizes a checksum of zero and corrects
 the issue.
 
 	Paul Shupak
 	track@plectere.com