Ticket #931: openvpn-2.4.3-tap-loopback-fix.patch

openvpn-2.4.3/src/openvpn/multi.c

@@ -2662 +2662 @@
                                 /* if dest addr is a known client, route to it */
                                 if (mi)
                                 {
+                                    if (mi == m->pending) {
+                                        msg(D_MULTI_DROPPED, "MULTI: dest %s loops back to source, packet dropped",
+                                            mroute_addr_print(&dest, &gc));
+                                    } else
 #ifdef ENABLE_PF
                                     if (!pf_c2c_test(c, &mi->context, "tap_c2c"))
                                     {