I might just be way behind but found out that there's a fork of Xenia that exists that theoretically supports netplay. I myself haven't tried it, but given the games list, I thought it would be worth mentioning and keeping an eye out from folks in this forum.
More information can be found here, on the github page for the fork:
https://github.com/AdrianCassar/xenia-canary/tree/netplay_canary_experimentalList of supported (racing) games.
bold is my emphasis for games that I am most excited about.
Dirt
Grid
Juiced 2
Mad Riders
Moto GP 06, 07, (14 and 15 sort of work)
Outrun Online Arcade* (worth noting that this version allows 6p whereas the arcade version is only 4p) - video @
Ridge Racer 6WRC 2010/4/5 (2010/4 are listed as having stability issues)
Forza 4 confirmed to not work, or any games that obviously require external servers (activision, EA, ubisoft)
Hydro Thunder Hurricane is not on the list either way, but I'm trying to get more info from the discord on whether anyone has gotten it working. This would be a friggin dream. One of my favorite racing games and already works pretty well in Xenia if your PC can handle it.
The best part about all of this - if you are like me and keep your machines offline - is that you can host your own "Xenia Web Services" server on your LAN -
https://github.com/AdrianCassar/Xenia-WebServices - so you can link up locally without needing internet access!
Of course, Xenia is not as far along as other emulators, such as RPCS3, and development will be ongoing, and continue to take time. What the folks have already achieved has been nothing short of incredible. But the reality that some of these games may work online sooner rather than, say, 20 years from now - was just too exciting to hold back.
Just thought I'd share that this would be something great to keep an eye on for those of us with more than one cab.
FYI use wheel2xinput -
https://forum.arcadecontrols.com/index.php/topic,166939.0.html - to interface your wheel with xenia. Or x360ce. I may be biased towards the former!