recent MFC code to 6-STABLE kills ipv6
Sean McNeil
sean at mcneil.com
Mon Nov 7 02:53:36 PST 2005
On Sun, 2005-11-06 at 18:06 +0900, SUZUKI Shinsuke wrote:
> Hello Sean,
>
> >>>>> On Sat, 5 Nov 2005 14:39:13 -0800
> >>>>> sean at mcneil.com(Sean McNeil) said:
>
> > > 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
> > No, nothing like that in any logs. I can't see how there could
> > suddenly be a duplication of hardware addresses. I agree, though,
> > that IPv6 is disabled for dc0. Some change in the kernel has caused
> > this.
>
> I tried the same configuration (with the different interface card)
> using the latest RELENG-6 in my environment, but I couldn't reproduce
> your problem.
With a kernel built just moments ago, I still have the same issue. I
have an older kernel, however, that works perfectly fine:
FreeBSD server.mcneil.com 6.0-STABLE FreeBSD 6.0-STABLE #78: Tue Nov 1 23:07:02 PST 2005 root at server.mcneil.com:/usr/obj/usr/src/sys/AMD64 amd64
With this kernel I can ping6 my dc0 interface just fine. That should
help narrow things down a bit.
Cheers,
Sean
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