> The kernels are still in
> ftp://antioche.lip6.fr/pub/bouyer/tmp/sis/NetBSD-1.6.1_RC2/binary/kernel/
> In case you want to compile your own kernel, the patch is at
> ftp://antioche.lip6.fr/pub/bouyer/tmp/sis/NetBSD-1.6.1_RC2/diff.gz
> (should apply cleanly to 1.6.1).
>
> This patch has been commited to current; a pullup request will be sent once
> 1.6.1 is out.

I applied the patch to 1.6 (it needed minor adjustments). From the preliminary 
tests I ran, it seems to work very well.