good to see you javispedro.
I guess our mistake was compiling the 'usual' Linux way make rm581_defconfig, make. But then again, it was my believe this is what dpkg-buildpackage actually does.
What I, and others, want, besides openmode patch, is.
IPtables NAT support
compatwireless compiled to this kernel, which I believe also requires some Netfilter changes in the kernel (for packet injection)
compile (or try to) the N900 modded drivers, that enables packetinjection.
Will give it a shot with buildpackage.