Hi,

I'm setting up IPsec, NAT, ipf, VPN, and whatnot on a few systems.
Is there a diagram of the NetBSD network subsystems, showing the
dataflow from one function to another, all the way from application
code to Ethernet drivers and back?

Right now I'm a bit confused of the order in which NAT, IPsec
tunneling, IPfilter etc. are applied to the packets.  There's a
simple diagram in the IPsec FAQ, but it doesn't talk about NAT
and leaves some other questions unanswered as well.

Thanks!

  -jm