Re: kern/40605 (forwarded IPv6 TCP packets get mangled by gif0 interface)

[Izumi Tsutsui <tsutsui%ceres.dti.ne.jp@localhost>]

The following reply was made to PR kern/40605; it has been noted by GNATS.

From: Izumi Tsutsui <tsutsui%ceres.dti.ne.jp@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: tsutsui%NetBSD.org@localhost, gnats-admin%NetBSD.org@localhost, 
netbsd-pr%pool.julien-oster.de@localhost,
        tsutsui%ceres.dti.ne.jp@localhost
Subject: Re: kern/40605 (forwarded IPv6 TCP packets get mangled by gif0 
interface)
Date: Sun, 15 Nov 2009 05:12:41 +0900

 > Synopsis: forwarded IPv6 TCP packets get mangled by gif0 interface
 
 Just FYI, but the following gif fix might also affect this PR.
 
 http://mail-index.NetBSD.org/source-changes/2009/11/11/msg003069.html
 >> Clear cksum flags before any further processing like ip_forward does.
 >> Many drivers set the UDP/TCP v4 flags even for v6 traffic and if the
 >> packet is encapsulated with gif, the IPv6 header would get corrupted by
 >> ip_output. Patch suggested by bad@
 
 ---
 Izumi Tsutsui