Re: NAT with public interface with more than one address

To: tech-net%netbsd.org@localhost
Subject: Re: NAT with public interface with more than one address
From: mlelstv%serpens.de@localhost (Michael van Elst)
Date: Mon, 17 Jul 2023 05:26:08 -0000 (UTC)

john%klos.com@localhost (John Klos) writes:

>$ext_if = re0
>$ext_ip = { inet4($ext_if) }
>$localnet_lan = { 192.168.50.0/24 }
>map $ext_if dynamic $localnet_lan -> $ext_if


Seems to be a typo, probably:

map $ext_if dynamic $localnet_lan -> $ext_ip


>/etc/npf.conf:25:27: wrong variable 'ext_ip' type 'family-address-mask' for interface near '$ext_ip'

Is that also a typo like

map $ext_ip dynamic $localnet_lan -> $ext_if

?

That would explain why an address cannot be a substitute for an interface.

References:
- NAT with public interface with more than one address
  - From: John Klos

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