ike: Add an additional but separate AEAD proposal to IKE config, if supported

src/charon-nm/nm/nm_service.c

@@ -532,6 +532,7 @@ static gboolean connect_(NMVPNPlugin *plugin, NMConnection *connection,
 							(char*)address, IKEV2_UDP_PORT,
 							 FRAGMENTATION_NO, 0);
 	ike_cfg->add_proposal(ike_cfg, proposal_create_default(PROTO_IKE));
+	ike_cfg->add_proposal(ike_cfg, proposal_create_default_aead(PROTO_IKE));
 	peer_cfg = peer_cfg_create(priv->name, ike_cfg,
 					CERT_SEND_IF_ASKED, UNIQUE_REPLACE, 1, /* keyingtries */
 					36000, 0, /* rekey 10h, reauth none */