I set up a masqueraded local net using linux conf (w/ linuxconf-1.16r3.2-2
and initscripts-4.70-1.i386.rpm) and it works fine once I activate changes.
Then fails to work after reboot:  Either linuxconf isn't updating the
scripts right or there is some problem in initscripts handling of the
changes (sorry; I didn't dive into inspecting the scripts!).

If I run linuxconf after the reboot it always shows the changes that
need to be activated again and activating them fixes the problem until next
reboot.  I've worked around by not using linuxconf for that config.  Here
is the "changes needing to be activated" info (hand-typed since I can't
copy/paste from the silly window!):

IP firewall forward rules, default accept
cmd proto       network/netmask    ->     network/netmask   iface
ports...flags
msq All         192.68.1.0/255.255.255.0  0.0.0.0/0.0.0.0  Any  [] -> []
AFF X00
IP firewall forward rules, default deny

Thanks!