[radvd-devel-l] NDP proxy for a subnet : radvd can help ?

Pekka Savola pekkas at netcore.fi
Mon Mar 22 03:09:55 EDT 2010

On Sun, 21 Mar 2010, Thibault VINCENT wrote:
> Radvd may not be the proper solution to my problem, but since I can't
> find any other alternative, it's my only card.
> There's a box plugged in a network I don't manage, it's allowed to use a
> whole /56 but this subnet is not routed to the host's address, the whole
> thing rely on NDP. As a result, if I want this Linux box to act as a
> router I have to add every address to route in the neighbor proxy list.
> For individual hosts it was ok, but I can't use this for a large subnet...
> The idea : a daemon that would advertise every solicitation within the
> subnet.
> At first I thought radvd was able to do this but it seems not. Is that a
> feature that could be implemented ? Or do you know an other way to
> achieve that ?

This seems like something that does not belong in radvd.

Have you taken a look at the proxy_ndp sysctl in latest Linux kernels? 
I wonder if it would be doing what you want.

Pekka Savola                 "You each name yourselves king, yet the
Netcore Oy                    kingdom bleeds."
Systems. Networks. Security. -- George R.R. Martin: A Clash of Kings

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