Re: Routing and forwarding: directly connected computers

[Brian Brombacher]

> On Sep 3, 2020, at 11:02 AM, Ernest Stewart <erneststewar...@hotmail.com> 
> wrote:
> 
> I forgot to say, in every computer I have /etc/sysctl.conf with 
> "net.inet.ip.forwarding=1".
> 
> And I insist, what shocks me the most is that tcpdump shows in both computers 
> the right icmp packets but ping says 100% packets lost.

You’ve really got to pay attention to the netmasks here.  You’re trying to use 
multi routing without doing it right.  Your setup is unnecessarily complex, and 
requires pf rules and additional routing tables to make this work.  Switch to 
bridges networking if it helps simplify things.

What is the insistence on re-using portions of 192.168.1 addresses on a network 
with a router of 192.168.2?

You should expand and use more subnets under 192.168.x.