Re: Using NetBSD as a travel router

[Roy Marples <roy%marples.name@localhost>]

On 26/01/2018 23:01, D'Arcy Cain wrote:
> On 01/25/2018 03:43 PM, D'Arcy Cain wrote:
> > Yah, I keep checking that one because it sure looks like that is the
> > issue.  Is there any way that forwarding could be disabled even with
> > that set?
>
> OK, I got it working sort of.  When I looked at the packets going
> through the wifi interface I saw this.
>
> 15:57:20.388862 IP 0.0.0.0 > vex.net: ICMP echo request, id 12998, seq
> 16, length 64
>
> I had assumed that the 0.0.0.0 was a place holder for whatever IP
> address was on the interface as supplied by DHCP but then I saw this in
> the output of ifconfig as well as the correct address.
>
> inet 0.0.0.0/8 broadcast 255.255.255.255 flags 0x0
>
> As soon as I did "ifconfig athn0 -0.0.0.0" the packets started flowing.
> So now the question is, how did that address get installed on the
> interface.  It's great that I can make it work by running a simple
> command but it would be nice if it came up properly in the first place.

dhclient puts it there when it first starts up.
See /sbin/dhclient-script PREINIT phase.

If you don't want to hack that script then use dhcpcd instead where 
there is no need to assign the unspecified address to the interface to 
get DHCP working.

Roy