In message <199903051900.LAA25447@saul4.u.washington.edu>, Zach Fine writes:
>suspiciously named option, net.inet.ip.forwarding, was set to 0, so I
>set it to 1. Suddenly everything began to work.
>
>I'm curious why none of the Networking FAQs mention this sysctl
>setting. Were /usr/sbin/ipnat or /usr/sbin/ipf supposed to toggle this
>one on their own? Have I done something wrong by manually toggling
>this option? Is there some way to have this configuration set
>automatically at boot without adding a line to set it in
>/etc/netstart.local?

Adding 'options GATEWAY' or 'options IPFORWARDING' to your kernel will
cause the default to be 1.  See the options(4) man page.