How can I change the dst_addr in an IP packet using PF (Packet Filter)?

Question

FreeBSD

An IP packet goes out from the server (freebsd) with a specific destination address. You need to change this address when you exit. That is: a ping is sent to the address 192.168.4.217, and at the output it would go to 192.168.1.1.
As far as I remember, the rdr rule only works on incoming packets, and nat changes src_addr.
Interested in the substitution rule in Packet Filter or some other tool (firewall or program) on freebsd.
Thank you)

Answer 1

The redirect can also work internally, for example, you can redirect all traffic going outside to port 80 to the internal host:
rdr on $internal_if proto tcp from $lannet to any port 80 -> $internal_host port 80