diff --git a/custom-words.txt b/custom-words.txt
index b52519ec1fe3..8b020da40306 100644
--- a/custom-words.txt
+++ b/custom-words.txt
@@ -2720,4 +2720,7 @@ largerc
 mediumrc
 smallrc
 Autotune
-guardrailsversions
\ No newline at end of file
+guardrailsversions
+KubeProxyConfig
+IPVS
+TCPFIN
\ No newline at end of file
diff --git a/specification/containerservice/resource-manager/Microsoft.ContainerService/preview/2022-08-02-preview/managedClusters.json b/specification/containerservice/resource-manager/Microsoft.ContainerService/preview/2022-08-02-preview/managedClusters.json
index e7e1ea3213e0..2b5351937006 100644
--- a/specification/containerservice/resource-manager/Microsoft.ContainerService/preview/2022-08-02-preview/managedClusters.json
+++ b/specification/containerservice/resource-manager/Microsoft.ContainerService/preview/2022-08-02-preview/managedClusters.json
@@ -3887,6 +3887,81 @@
           },
           "title": "The IP families used to specify IP versions available to the cluster.",
           "description": "IP families are used to determine single-stack or dual-stack clusters. For single-stack, the expected value is IPv4. For dual-stack, the expected values are IPv4 and IPv6."
+        },
+        "kubeProxyConfig": {
+          "type": "object",
+          "properties": {
+            "enabled": {
+              "type": "boolean",
+              "description": "Whether to enable on kube-proxy on the cluster (if no 'kubeProxyConfig' exists, kube-proxy is enabled in AKS by default without these customizations)."
+            },
+            "mode": {
+              "type": "string",
+              "enum": [
+                "IPTABLES",
+                "IPVS"
+              ],
+              "x-ms-enum": {
+                "name": "mode",
+                "modelAsString": true,
+                "values": [
+                  {
+                    "value": "IPTABLES",
+                    "description": "IPTables proxy mode"
+                  },
+                  {
+                    "value": "IPVS",
+                    "description": "IPVS proxy mode. Must be using Kubernetes version >= 1.22."
+                  }
+                ]
+              },
+              "description": "Specify which proxy mode to use ('IPTABLES' or 'IPVS')"
+            },
+            "ipvsConfig": {
+              "type": "object",
+              "properties": {
+                "scheduler": {
+                  "type": "string",
+                  "enum": [
+                    "RoundRobin",
+                    "LeastConnection"
+                  ],
+                  "x-ms-enum": {
+                    "name": "ipvsScheduler",
+                    "modelAsString": true,
+                    "values": [
+                      {
+                        "value": "RoundRobin",
+                        "description": "Round Robin"
+                      },
+                      {
+                        "value": "LeastConnection",
+                        "description": "Least Connection"
+                      }
+                    ]
+                  },
+                  "description": "IPVS scheduler, for more information please see http://www.linuxvirtualserver.org/docs/scheduling.html."
+                },
+                "tcpTimeoutSeconds": {
+                  "type": "integer",
+                  "format": "int32",
+                  "description": "The timeout value used for idle IPVS TCP sessions in seconds. Must be a positive integer value."
+                },
+                "tcpFinTimeoutSeconds": {
+                  "type": "integer",
+                  "format": "int32",
+                  "description": "The timeout value used for IPVS TCP sessions after receiving a FIN in seconds. Must be a positive integer value."
+                },
+                "udpTimeoutSeconds": {
+                  "type": "integer",
+                  "format": "int32",
+                  "description": "The timeout value used for IPVS UDP packets in seconds. Must be a positive integer value."
+                }
+              },
+              "description": "Holds configuration customizations for IPVS. May only be specified if 'mode' is set to 'IPVS'."
+            }
+          },
+          "description": "Holds configuration customizations for kube-proxy. Any values not defined will use the kube-proxy defaulting behavior. See https://v<version>.docs.kubernetes.io/docs/reference/command-line-tools-reference/kube-proxy/ where <version> is represented by a <major version>-<minor version> string. Kubernetes version 1.23 would be '1-23'."
         }
       },
       "description": "Profile of network configuration."