ipv6 default router Operation not permitted

[Schrodinger]

On 2013/03/13 02:25, Damien Fleuriot wrote:

[...]

> 
> 
> The network is actually /48 and you get assigned a /64 inside it.
> 
> Set your interface to use the /48 prefix and voodoo will happen (I can assure you with a 97% certainty that your default GW is inside the /48).
> Of course, using the /48 prefix doesn't mean you can/may use IPs from outside the /64 that was given you.

Voodoo, indeed... I'm sure there's a /48 used somewhere but to be more
specific, or rather obvious, my default gateway resides at the boundary
of a /56 - 2001:41D0:2:E700::/56 If you pay close attention you will
notice that the default gateway is the last usable address from that
range. I had already tried this btw, I spent some time confirming what I
am was seeing; what was the actual case and ways I could perhaps change
the configuration to get it Just Working. However, I would rather it
worked correctly and not contain a configuration option that I either do
not understand it's necessity nor do I see it as necessary.

I don't claim to know IPv6 inside and out but one consideration I had
was that because of the host route for the default gateway FreeBSD does
not solicit for the "on-link gateway" because the interface is not set 
to ACCEPT_RTADV. But that doesn't make immediate sense.

Corrections and education welcome.

> 
> 
> Kindly reply with topic "SOLVED" if that fixed you up, that googlers in the future may find the solution easily.

I would, but IMO this isn't the most optimal solution; changing my
prefix length so that I can reach the gateway... Can this kind of host
routing just not be done ? The way I see this issue is that without
ACCEPT_RTADV on my interface FreeBSD won't attempt Neighbour
Solicitation for the default gateway but I am uncertain why this is the
case. Bug or policy or That's How It Works.

C.
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