#define RX_CONN_BUSY 32 /* connection is busy; don't delete */
#define RX_CONN_ATTACHWAIT 64 /* attach waiting for peer->lastReach */
#define RX_CONN_MAKECALL_ACTIVE 128 /* a thread is actively in rx_NewCall */
-#define RX_CONN_NAT_PING 256 /* nat ping requested */
+#define RX_CONN_NAT_PING 256 /* NAT ping requested but deferred during attachWait */
/* Type of connection, client or server */
#define RX_CLIENT_CONNECTION 0