Add route lookup ingress drop counter to interface and subinterface counters

release/models/interfaces/openconfig-interfaces.yang

@@ -51,7 +51,15 @@ module openconfig-interfaces {
     Section 4.c of the IETF Trust's Legal Provisions Relating
     to IETF Documents (http://trustee.ietf.org/license-info).";
 
-  oc-ext:openconfig-version "3.8.1";
+  oc-ext:openconfig-version "3.11.0";
+
+  revision "2026-07-29" {
+      description
+        "Add ingress route lookup drop counter to interface and
+        subinterface counters.";
+      reference
+        "3.11.0";
+  }
 
   revision "2026-01-06" {
       description
@@ -1006,6 +1014,19 @@ module openconfig-interfaces {
         the Unix Epoch (Jan 1, 1970 00:00:00 UTC).";
       oc-ext:telemetry-on-change;
     }
+
+    leaf in-route-lookup-drop {
+      type oc-yang:counter64;
+      description
+        "The number of inbound packets received on the interface or
+        subinterface that were dropped during routing lookup due to no
+        matching route entry in the forwarding table (LPM miss) or
+        matching an explicit drop route.
+
+        Discontinuities in the value of this counter can occur
+        at re-initialization of the management system, and at
+        other times as indicated by the value of 'last-clear'.";
+    }
   }
 
   grouping interface-counters-state {