[Olsr-users] Sticky gateway

[Juliusz Chroboczek]

> a tunnel works well - at a first glance. It works, because the gateway-using 
> node has the decision on what gateway it uses.

Yes.  Tunnels are a way to implement source routing, which does solve
a number of issues indeed.

I strongly recommend a classic paper on the subject, Source Routing for
Campus-Wide Internet, by Saltzer, Reed and Clarke,

  http://web.mit.edu/Saltzer/www/publications/sourcerouting/SourceRouting.html

Note that for political reasons the paper under-states its point -- hence
the ``campus-wide'' in the title.

> At the second glance, auto-tunnels have drawbacks:

Encapsulation is not the best way of implementing source routing.  At least
your points (a) and (b) are not applicable to other implementations of
source routing.

                                        Juliusz