Special route and NPF

[BERTRAND Joël <joel.bertrand%systella.fr@localhost>]

	Hello,

	I'm using NPF to filter packets and I'm unable to find a solution to a 
simple problem.

	Here is my network :

eth1(wan1)--+--Linux router-----+---eth0(lan1)
eth2(wan2)--+                   +---tap0(lan2)
                                +---tap1(lan3)



wm0(wan3) --+--NetBSD router----agr0(lan4)
tap0(lan3)--+


	On eth1, I have some inet4 addresses (/27). I want to route packets 
from a specific address from eth1 to a server (192.168.10.103) on lan4. 
Both routers are connected by lan3 (ethernet VPN).

	I have added some iptables rules in Linux router and all incoming 
packets are routed to 192.168.10.103. 192.168.10.103 answers but as 
Netbsd router's default route is over wm0, all packets send by 
192.168.10.103 are sent over wm0 and not over tap0.

	How can I add a rule in /etc/npf.conf to route packets that come from 
my linux router to be sent to this router ?

	Best regards,

	JB