I was reading through the pf documentation and found the following example of NATing several internal IP addresses to two external IP addresses:
nat on $ext_if inet from any to any -> 192.0.2.4/31 source-hash Let's say the external IP address of my firewall is 192.0.2.1. Do I need to configure proxy ARP entries on my external interface for 192.0.2.4 and 192.0.2.5, or is this something pf takes care of automagically? Please excuse the following disclaimer. I don't enter it, my mailserver does. This message may contain information that is privileged, confidential and exempt from disclosure under applicable law. If you are not the intended recipient of this message you may not store, disclose, copy, forward, distribute or use this message or its contents for any purpose. If you have received this communication in error, please notify us immediately by return e-mail and delete the original message and any attachments from your e-mail system. Thank you.

