I can connect to my P2S in LAN mode with OrcaSlicer just fine (currently using the latest 2.4.0 nightly).
> be able to connect to printers in a different subnet
This is a separate issue, I think even Bambu Studio can't connect to printers in LAN mode on a different subnet.
You either haven't updated the firmware or you also enabled "Developer mode" which has its own issues.
> This is a separate issue, I think even Bambu Studio can't connect to printers in LAN mode on a different subnet.
It's not a separate issue, it's a long-standing bug in their proprietary networking plugin that they refuse to fix. Orca slicer has implemented a hacky workaround so it actually works there.