dev tun0 and ping

[Claudio Jeker <cjeker@ee.ethz.ch>]

Ha all,

I have configured /dev/tun0 to send all packets to 192.168.2.2 to a
userland application (Simulator).

> ifconfig tun0 inet 192.168.2.1 192.168.2.2 up mtu 1500
> sudo route add -host 192.168.2.2 -interface 192.168.2.1

> ifconfig tun0
tun0: flags=50<POINTOPOINT,RUNNING> mtu 1500
        inet 192.168.2.1 --> 192.168.2.2 netmask 0xffffff00 
> netstat -rn -f inet | grep tun0
192.168.2.2        192.168.2.1        UHS         0        0   1500  tun0

My problem is I can "ping 192.168.2.2" and I see how the traffic goes to
the userland applications. I see also the replies comming back but somehow
OpenBSD does not accept the 192.168.2.1 as a local address. 
(ping -I 127.0.0.1 192.168.2.2 does work)

Also a ping 192.168.2.1 gives no response.

Any ideas what went wrong?

-- 
:wq Claudio