[Babel-users] Babel and multipath [was: atomic updates ...]

[Juliusz Chroboczek]

> Third, Babel has a fairly sophisticated loop avoidance mechanism, and
> it's not quite trivial to generalise it to multipath.

Note that this is analoguous to the issues with aggregation in BGP --
which are solved by using an AS-SET.  We don't have a "router-id-set"
in Babel, so we need to choose one of the router-ids to announce.

Loop avoidance for aggregated and multipath routes could perhaps be
done in a backwards compatible manner by having a "router-id-set"
sub-TLV, but I haven't given it serious thought.

-- Juliusz