[geekmaster]

I discovered that on the K4NT:

mount -o loop,noatime /mnt/us/debian.ext3 /mnt/us/ext3
mount /dev/mmcblk0p2 /mnt/mmc
/mnt/mmc/bin/bash
/mnt/us/ext3/opt/bin/ipkg

actually works if I add

mntroot rw
ln -s /mnt/us/ext3/opt/lib/libipkg.so.0.0.0 libipkg.so.0
mntroot ro

At least on the K4NT, the diag partition busybox not only has bash, but also has an ipkg-compatible wget in its busybox, unlike the less useful main partition busybox.

The busybox in the diag partition is v1.17.1, but the busybox in the main partition is version v1.7.2 (a lot older and with a lot less built-in commands than the diag version).