Should darknet and opennet be semi-separate networks?

IMHO we will need some sort of mechanism for dealing with the case where
we have two networks, with limited connectivity between them. These
would be "semi-separate" networks. This can occur with two darknets; the
Chinese darknet and the Euroamerican darknet would probably have few
links between them. But it may also be the case with darknet and
opennet.

The solution is for requests to travel first in the local network, and
then, if they are not satisfied locally, to travel to an "escape route"
and search the other network. Thus, requests in the chinese network
would search locally first, and then if that failed they would search
the wider network. Inserts would go to both networks. Since there is a
limited escape capacity, some requests will terminate within the
original network.

The reason I suggest this for darknet vs opennet is this:
- The optimal routing algorithms for darknet and opennet may not be the
  same; on darknet, location swapping is crucial, but on opennet, it is
  unnecessary.
- The load limiting algorithms proposed for darknet will need
  considerable adaptation for opennet.
- There is no real reason to expect the two networks to make any sort of
  sense topologically when put together.

Does this assume that the external network is bigger? Maybe; opennet
will be bigger than darknet for the foreseeable future... It can be used
even if they are not; if they are of equal size, the escape mechanism is
sensible, it's only when the network on which the request is running is
much bigger than the one it is going to that it is a problem. In which
case there may be many attached networks. We don't want requests to
multiply, so we have to forward a request to only one. That could be the
network closest to the node which fails to find the data, or it could be
randomly chosen...


Is this hopelessly naive? There are probably attacks against it...
-- 
Matthew J Toseland - toad at amphibian.dyndns.org
Freenet Project Official Codemonkey - http://freenetproject.org/
ICTHUS - Nothing is impossible. Our Boss says so.
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