Wireguard also has a mechanism where it may choose (under high load) to respond with a cookie, which is the MAC of the requesting IP address. The sender then ne

Wireguard also has a mechanism where it may choose (under high load) to respond with a cookie, which is the MAC of the requesting IP address. The sender then needs to resend his request with that cookie. https://www.wireguard.com/papers/wireguard.pdf https://www.wireguard.com/papers/wireguard.pdf (5.3)