1 files changed, 15 insertions, 0 deletions
diff --git a/net.c b/net.c
index 68c2840621..a104976b0b 100644
--- a/net.c
+++ b/net.c
@@ -1304,6 +1304,7 @@ void net_check_clients(void)
 {
     VLANState *vlan;
     VLANClientState *vc;
+    int i;
 
     /* Don't warn about the default network setup that you get if
      * no command line -net or -netdev options are specified. There
@@ -1348,6 +1349,20 @@ void net_check_clients(void)
                     vc->name);
         }
     }
+
+    /* Check that all NICs requested via -net nic actually got created.
+     * NICs created via -device don't need to be checked here because
+     * they are always instantiated.
+     */
+    for (i = 0; i < MAX_NICS; i++) {
+        NICInfo *nd = &nd_table[i];
+        if (nd->used && !nd->instantiated) {
+            fprintf(stderr, "Warning: requested NIC (%s, model %s) "
+                    "was not created (not supported by this machine?)\n",
+                    nd->name ? nd->name : "anonymous",
+                    nd->model ? nd->model : "unspecified");
+        }
+    }
 }
 
 static int net_init_client(QemuOpts *opts, void *dummy)