Ubiquiti provides OpenWrt based SDK for their firmware. To my information, it contains some proprietary madwifi-based WiFi drivers with some older OpenWrt version. My question is how it would be possible to run Batman on top of their firmware (thus not latest OpenWrt). As Batman is in kernel, is is enough kernel-backwards compatible to be able to run also on older (2.6) kernel versions? For olsrd it is much simpler: you just install olsrd package and this is it.