We do P2P in our networking software and this is why we do it all in band instead of using STUN, TURN, or other common methods. Those get blocked and they’re also often insecure.

STUN has mitigations now against being weaponized but it’s still a shit protocol. The fact that neither STUN nor TURN contain any way whatsoever to accomplish any kind of rendezvous without yet another signaling path boggles my mind given how easy it would have been.