DERP is a packet relay system (client and servers) where peers are addressed using WireGuard public keys instead of IP addresses.
DERP is a packet relay system (client and servers) where peers are addressed using WireGuard public keys instead of IP addresses.
It relays two types of packets:
"Disco" discovery messages (see ../disco) as the a side channel during NAT traversal.
Encrypted WireGuard packets as the fallback of last resort when UDP is blocked or NAT traversal fails.