I had ipnat happily running on my 2.0_BETA box. It worked perfectly over
100 days until it just suddenly stopped working. I tried restarting
everything and clearing nat rules, but it didn't help. Since i had to
reboot i upgraded to 2.0_RC4, which worked only for _2_ days and i had
to reboot once again.

I'm running NetBSD i386 with custom kernel (only useless device drivers
removed from generic)