Hi all,

last night I enabled the IPFORWARDING ond the NetBSD-machine. If I
made a ping from a Linux-computer to a host out of my network - the
NetBSD-computer dialed up to my ISP. OK -but I didn't get any
response. So I tryed traceroute 141.30.4.242:

-> traceroute to 141.30.4.242
-> 1 netbsd1.network.de (192.168.1.1) 1.978ms ...
-> 2 * * *
-> 3 * * *

Two reasons may be possible:

1. The NetBSD-machine establishes a connection to my ISP but does not
send the
    received packages from the internet host back to Linux.

2. The IP-header of each package sended from the Linux-box containes:

    target-IP = 141.30.4.242
    source-IP = 192.168.1.2

    Because the NetBSD-box makes no IP-translation the IP-headers
containe the
    source-IP 192.168.1.2. If the host (with IP = 141.30.4.242) sends
the packages
    back to me the packages will not be routed because the router in
the internet will
    never route packages with an target-IP = 192.168.1.2 - and thus I
didn't get a
    response.

What did you think about it?

regards,
oliver