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Date:      Thu, 18 Dec 2008 23:08:12 +0100
From:      Ivan Voras <ivoras@freebsd.org>
To:        freebsd-net@freebsd.org
Subject:   Re: IPv6 routing help?
Message-ID:  <giehkk$pip$1@ger.gmane.org>
In-Reply-To: <494AC323.9070007@ibctech.ca>
References:  <giedif$bd0$1@ger.gmane.org> <494AC323.9070007@ibctech.ca>

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[-- Attachment #1 --]
Steve Bertrand wrote:
> Ivan Voras wrote:
> 
>> As far as I understand ipv6 (very little), this basically says the
>> router told the client it can't send packets to outside addresses with
>> source addresses that are link-local. Is this correct?
> 
> I don't know much about 6to4. All of my IPv6 is native, but what you are
> saying appears correct.
> 
> It is almost like a translation at the router should be happening, but
> it is not.

Yes.

>> However, adding an ipv6 address to the client, in this case
>> 2002:xxyy:xxyy::10/64 doesn't help and breaks even pinging the router's
>> external address. It looks to me like I'm missing something important in
>> the relation between the link-local and the global addresses, but what?
> 
> In this case, you are implementing the same IP prefix on both sides of
> the router, which won't work.

I don't follow you - is something significantly different than ipv4?

> Try to ping6 www.freebsd.org from the router itself. If that works, the
> issue is most certainly the router. If this is the case, hopefully
> someone with more 6to4 experience can explain why your router is not
> doing the expected thing.

IPv6 from and to the "router" (it's actually an ordinary machine doing
lots of stuff) works for all purposes.


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