This is also how the WBM4 was setup, with OLSR, BMX6, Bable all running in parallel with different subnet ranges.
The configuration files for OpenWRT are around somewhere. Try searching the WBM site.
Aha. I didn't find the scripts that were used in WBMv4, but I found the one from WBMv3. http://battlemesh.org/BattleMeshV3/NodeConfigScript/AllInOne
Thanks, I'll check this out.
--Ryan