gre: set proper fib index for unnumbered interfaces, unset fib index before forwardin...

[vpp.git] / src / vnet / interface_cli.c

diff --git a/src/vnet/interface_cli.c b/src/vnet/interface_cli.c
index 73b2757..6843186 100644 (file)
--- a/src/vnet/interface_cli.c
+++ b/src/vnet/interface_cli.c
@@ -976,8 +976,23 @@ set_unnumbered (vlib_main_t * vm,
     return clib_error_return (0, "When enabling unnumbered specify the"
                              " IP enabled interface that it uses");
 
-  vnet_sw_interface_update_unnumbered (unnumbered_sw_if_index,
-                                      inherit_from_sw_if_index, enable);
+  int rv = vnet_sw_interface_update_unnumbered (
+    unnumbered_sw_if_index, inherit_from_sw_if_index, enable);
+
+  switch (rv)
+    {
+    case 0:
+      break;
+
+    case VNET_API_ERROR_UNEXPECTED_INTF_STATE:
+      return clib_error_return (
+       0,
+       "When enabling unnumbered both interfaces must be in the same tables");
+
+    default:
+      return clib_error_return (
+       0, "vnet_sw_interface_update_unnumbered returned %d", rv);
+    }
 
   return (NULL);
 }