Debian & 2.4 kernel

I am in the process of testing 2.4 kernels on my Debian boxes, and
if I remember correctly from the days of upgrading to 2.2, I have
to point my apt at the unstable archive. Is this correct?

I have no problems installing the kernel, but iptables seems to rely
upon a newer version of libc6. Am I correct in understanding
the easiest way is to just do a update from the unstable
archives? If so, as anyone ran into any probs in doing so?

v/r
Mike