Just look in the package directory, there should be a bunch of .deb files with endings like sparc.deb, ppc.deb and arm.deb
download the arm one. Also a .deb is just like an ipk, so if you want to install it you will need to just go like this:
# mv package.arm.deb package.arm.ar
# ar -x package.arm.ar
# tar -cvf package.arm.tar data.tar.gz control.tar.gz debian-binary; gzip package.arm.tar
# mv package.arm.tar.gz package.arm.ipk
That will make it installable with ipkg, if it still won't install with ipkg then you will have to upack it again and then just unpack the data.tar.gz in it and install it by hand.