I've been trying to get vMix working on my system to use as a broadcast point to a singular Twitch channel, with users calling in via OBS SRT.

OBS set to dial into my system on a particular port(s), vMix set to listen on said port(s), so I can push each caller live as I see fit. With a previous network setup which I cannot revert to, this alone was enough to accomplish exactly what I want. Now, with an upgraded internet package, came a new all-in-one cable box/modem/wifi AP to which I am connected via CAT6 ethernet, and yet with the same ports forwarded and even DMZ'ing my system and/or whole modem, I'm unable to have an instance of OBS call in to vMix via SRT. Any advice would be thoroughly appreciated, and any additional information I can provide to help troubleshoot my particular issue I would be more than happy to provide.

I'll have to try the local IP later when I get home, but all previous attempts have been made with the public IP so far. I've had issues with rendezvous calls regardless of configuration, but am unsure of exactly why. Hadn't thought to check if my issue also exists inside my own network yet though, never hurts to sanity check the basics.