Re: recent MFC code to 6-STABLE kills ipv6

From: Hajimu UMEMOTO <ume_at_freebsd.org>
Date: Sun, 06 Nov 2005 04:58:44 +0900
Hi,

>>>>> On Fri, 04 Nov 2005 19:36:08 -0800
>>>>> Sean McNeil <sean_at_mcneil.com> said:

sean> My IMAP server used to work perfectly fine with IPv6 connections from
sean> evolution.  Today, there was some MFCd code that has killed it.  I can
sean> no longer log into my imap server with IPv6.  Investigating, I find that
sean> the interface I have tied to stf0 will not respond.

When was your working kernel built?

sean> ping6 does NOT work for
sean> fe80::203:6dff:fe1a:b19b%dc0
sean> 2002:18c7:2d36:0:203:6dff:fe1a:b19b
sean> 2002:18c7:2d36::

It seems an IPv6 operation for dc0 is disabled entirely.  Don't you
see an error message from your kernel like following?

	dc0: possible hardware address duplication detected, disable IPv6

Sincerely,

--
Hajimu UMEMOTO _at_ Internet Mutual Aid Society Yokohama, Japan
ume_at_mahoroba.org  ume_at_{,jp.}FreeBSD.org
http://www.imasy.org/~ume/
Received on Sat Nov 05 2005 - 18:59:17 UTC

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