On 11/11/2021 12:25, Juliusz Chroboczek wrote:
Yes, it looks like a new mechanism is needed. I need to think it over,
it's not immediately obvious how your proposed mechanism interacts with
Babel's loop-avoidance mechanisms. (At first sight, it might cause
persistent oscillations, at least in some topologies.)
At least that sounds like it might be publishable!
:)
For now I've gone with a change to the way default routes are installed.
- first establish if we are connected to the net
- then see if one of the preferred exit points is reachable via the net
- iff not then install a default route from here
This depends on correctness elsewhere (it assumes that if a preferred
node is able to see the net it will also be advertising a default route
which will propagate via babel). But it seems to have survived a few
trial reboots.
Mark
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