Developer Sleirsgoevy has released an update to his unofficial Hamachi client for the PS4. Version 0.2 brings firmware 9.00 support.
What is Hamachi Client for PS4?
Hamachi is a VPN service that lets you extend a LAN network online. In other words, it helps you simulate a local network with friends over the internet, in order to play LAN games remotely.
This PS4 version is not an official product by LogMeIn Inc. This is a port of LogMeIn Hamachi virtual LAN client to the PS4. It is done by wrapping the linux binary.
https://wololo.net/2021/12/27/ps4-re...-9-00-support/