http://ciisqbg45nggykdl6rjdrq3wc64csga4vkphu66qsi65mypeitqedoad.onion/blog/wireguard-privacy-concerns
No single user should be statically allocated a single IP address, neither on a public nor a virtual network. A user's internal IP address might be discovered by an adversary (through WebRTC, for example), who might then be able to match it with records acquired from a VPN provider (through theft, sale, or legal seizure).