Add MANUAL proxy-arp mode and manual-ip-prefix leaf-list to IPv4 in openconfig-if-ip model

Author: jsingh2-c

release/models/interfaces/openconfig-if-ip.yang

@@ -45,7 +45,14 @@ module openconfig-if-ip {
     Section 4.c of the IETF Trust's Legal Provisions Relating
     to IETF Documents (http://trustee.ietf.org/license-info).";
 
-  oc-ext:openconfig-version "3.9.0";
+  oc-ext:openconfig-version "3.10.0";
+
+   revision "2026-03-30" {
+     description
+       "Add IPv4 proxy ARP MANUAL mode prefix list entries with
+       OpenConfig list config/state structure.";
+     reference "3.10.0";
+  }
 
     revision "2025-06-20" {
     description
@@ -1311,6 +1318,19 @@ revision "2023-06-30" {
   }
 
 
+  grouping ipv4-proxy-arp-manual-prefix-config {
+    description
+      "Configuration parameters for a proxy ARP manual IPv4
+      prefix entry.";
+
+    leaf prefix {
+      type oc-inet:ipv4-prefix;
+      description
+        "IPv4 prefix for which proxy ARP replies are sent when
+        mode is MANUAL.";
+    }
+  }
+
   grouping ipv4-proxy-arp-config {
     description
       "Configuration parameters for IPv4 proxy ARP";
@@ -1335,6 +1355,12 @@ revision "2023-06-30" {
             and target IP addresses are in different subnets, as well
             as those where they are in the same subnet.";
         }
+        enum MANUAL {
+          description
+            "The system responds to ARP requests only for target
+            prefixes that are explicitly configured in
+            manual-ip-prefixes.";
+        }
       }
       default "DISABLE";
       description
@@ -1471,6 +1497,49 @@ revision "2023-06-30" {
             "Operational state parameters for proxy ARP";
           uses ipv4-proxy-arp-config;
         }
+
+        container manual-ip-prefixes {
+          when "../config/mode = 'MANUAL'" {
+            description
+              "manual-ip-prefixes is applicable only when proxy ARP mode
+              is MANUAL.";
+          }
+          description
+            "Collection of IPv4 prefixes for which proxy ARP replies are
+            sent when mode is MANUAL.";
+
+          list manual-ip-prefix {
+            key "prefix";
+            description
+              "A configured IPv4 prefix entry for proxy ARP manual mode.";
+
+            leaf prefix {
+              type leafref {
+                path "../config/prefix";
+              }
+              description
+                "IPv4 prefix for which proxy ARP replies are sent when
+                mode is MANUAL.";
+            }
+
+            container config {
+              description
+                "Configuration parameters for a proxy ARP manual IPv4
+                prefix entry.";
+
+              uses ipv4-proxy-arp-manual-prefix-config;
+            }
+
+            container state {
+              config false;
+              description
+                "Operational state parameters for a proxy ARP manual
+                IPv4 prefix entry.";
+
+              uses ipv4-proxy-arp-manual-prefix-config;
+            }
+          }
+        }
       }
 
       container neighbors {