Subject: Re: Please Help with IPNAT and NetBSD/Alpha
To: Sean J. Schluntz <>
From: Tom Harvey <>
List: port-alpha
Date: 03/08/1999 23:09:50
At 09:07 AM 3/8/99 -0800, Sean J. Schluntz wrote:
>I'm currently running: NetBSD 1.3H (GENERIC) #16: Tue Oct 20 16:49:51 PDT 
>I've followed the directions on the NetBSD FAQ IP-NAT How-To 
>(, except for the part 
>about creating the netstart.local as I noticed that the support for IPNAT 
>has been added to the standard startup scripts (and netstart.local runs 
>_before_ the critical file systems are mounted so ipnat can't be found 
>Right now the system can see my internal network.  And it can see the 
>outside world, but it does not pass the bits along. ...

the kernel needs ip.forwarding on, which is not the default:

  % sysctl -a | grep forward
  net.inet.ip.forwarding = 1

build a kernel with "options GATEWAY" (as seen commented out in
/sys/arch/alpha/conf/ALPHA) or turn it on in /etc/netstart.local with:

  sysctl -w net.inet.ip.forwarding=1

good luck. NetBSD/alpha 1.3H should make a fine cable modem NAT'ing router.