bogo-cookie-zap.diff

diff --git a/ssl/test/runner/handshake_server.go b/ssl/test/runner/handshake_server.go
index ac23243..8f24e3e 100644
--- a/ssl/test/runner/handshake_server.go
+++ b/ssl/test/runner/handshake_server.go
@@ -190,9 +190,11 @@ func (hs *serverHandshakeState) readClientHello() error {
 		oldClientHelloCopy := *hs.clientHello
 		oldClientHelloCopy.raw = nil
 		oldClientHelloCopy.cookie = nil
+		oldClientHelloCopy.tls13Cookie = nil
 		newClientHelloCopy := *newClientHello
 		newClientHelloCopy.raw = nil
 		newClientHelloCopy.cookie = nil
+		newClientHelloCopy.tls13Cookie = nil
 		if !oldClientHelloCopy.equal(&newClientHelloCopy) {
 			return errors.New("dtls: retransmitted ClientHello does not match")
 		}