diff --git a/custom-words.txt b/custom-words.txt
index ae147855a80c..af5376653308 100644
--- a/custom-words.txt
+++ b/custom-words.txt
@@ -1148,6 +1148,7 @@ privatedns
 privatelinks
 privatepreview
 projectable
+propogation
 Protectable
 provisioner
 provisioningservices
diff --git a/specification/network/resource-manager/Microsoft.Network/stable/2020-06-01/examples/NetworkVirtualApplianceGet.json b/specification/network/resource-manager/Microsoft.Network/stable/2020-06-01/examples/NetworkVirtualApplianceGet.json
index 58d371379607..d17aae9db7e9 100644
--- a/specification/network/resource-manager/Microsoft.Network/stable/2020-06-01/examples/NetworkVirtualApplianceGet.json
+++ b/specification/network/resource-manager/Microsoft.Network/stable/2020-06-01/examples/NetworkVirtualApplianceGet.json
@@ -28,6 +28,7 @@
             "bundledScaleUnit": "1",
             "marketPlaceVersion": "12.1"
           },
+          "addressPrefix": "192.168.1.0/16",
           "virtualHub": {
             "id": "/subscriptions/subid/resourceGroups/rg1/providers/Microsoft.Network/virtualHubs/hub1"
           },
diff --git a/specification/network/resource-manager/Microsoft.Network/stable/2020-06-01/examples/NetworkVirtualApplianceListByResourceGroup.json b/specification/network/resource-manager/Microsoft.Network/stable/2020-06-01/examples/NetworkVirtualApplianceListByResourceGroup.json
index 3278b7cd75ec..d897debf6f06 100644
--- a/specification/network/resource-manager/Microsoft.Network/stable/2020-06-01/examples/NetworkVirtualApplianceListByResourceGroup.json
+++ b/specification/network/resource-manager/Microsoft.Network/stable/2020-06-01/examples/NetworkVirtualApplianceListByResourceGroup.json
@@ -29,6 +29,7 @@
                 "bundledScaleUnit": "1",
                 "marketPlaceVersion": "12.1"
               },
+              "addressPrefix": "192.168.1.0/16",
               "virtualHub": {
                 "id": "/subscriptions/subid/resourceGroups/rg1/providers/Microsoft.Network/virtualHubs/hub1"
               },
diff --git a/specification/network/resource-manager/Microsoft.Network/stable/2020-06-01/examples/NetworkVirtualApplianceListBySubscription.json b/specification/network/resource-manager/Microsoft.Network/stable/2020-06-01/examples/NetworkVirtualApplianceListBySubscription.json
index d936256e6861..f8f5eadb0802 100644
--- a/specification/network/resource-manager/Microsoft.Network/stable/2020-06-01/examples/NetworkVirtualApplianceListBySubscription.json
+++ b/specification/network/resource-manager/Microsoft.Network/stable/2020-06-01/examples/NetworkVirtualApplianceListBySubscription.json
@@ -28,6 +28,7 @@
                 "bundledScaleUnit": "1",
                 "marketPlaceVersion": "12.1"
               },
+              "addressPrefix": "192.168.1.0/16",
               "virtualHub": {
                 "id": "/subscriptions/subid/resourceGroups/rg1/providers/Microsoft.Network/virtualHubs/hub1"
               },
diff --git a/specification/network/resource-manager/Microsoft.Network/stable/2020-06-01/examples/NetworkVirtualAppliancePut.json b/specification/network/resource-manager/Microsoft.Network/stable/2020-06-01/examples/NetworkVirtualAppliancePut.json
index e263c9be2759..e140c02c324f 100644
--- a/specification/network/resource-manager/Microsoft.Network/stable/2020-06-01/examples/NetworkVirtualAppliancePut.json
+++ b/specification/network/resource-manager/Microsoft.Network/stable/2020-06-01/examples/NetworkVirtualAppliancePut.json
@@ -57,6 +57,7 @@
             "bundledScaleUnit": "1",
             "marketPlaceVersion": "12.1"
           },
+          "addressPrefix": "192.168.1.0/16",
           "virtualHub": {
             "id": "/subscriptions/subid/resourceGroups/rg1/providers/Microsoft.Network/virtualHubs/hub1"
           },
@@ -109,6 +110,7 @@
             "bundledScaleUnit": "1",
             "marketPlaceVersion": "12.1"
           },
+          "addressPrefix": "192.168.1.0/16",
           "virtualHub": {
             "id": "/subscriptions/subid/resourceGroups/rg1/providers/Microsoft.Network/virtualHubs/hub1"
           },
diff --git a/specification/network/resource-manager/Microsoft.Network/stable/2020-06-01/examples/NetworkVirtualApplianceUpdateTags.json b/specification/network/resource-manager/Microsoft.Network/stable/2020-06-01/examples/NetworkVirtualApplianceUpdateTags.json
index 392d57fc0426..93ddd4549eaf 100644
--- a/specification/network/resource-manager/Microsoft.Network/stable/2020-06-01/examples/NetworkVirtualApplianceUpdateTags.json
+++ b/specification/network/resource-manager/Microsoft.Network/stable/2020-06-01/examples/NetworkVirtualApplianceUpdateTags.json
@@ -35,6 +35,7 @@
             "bundledScaleUnit": "1",
             "marketPlaceVersion": "12.1"
           },
+          "addressPrefix": "192.168.1.0/16",
           "virtualHub": {
             "id": "/subscriptions/subid/resourceGroups/rg1/providers/Microsoft.Network/virtualHubs/hub1"
           },
diff --git a/specification/network/resource-manager/Microsoft.Network/stable/2020-06-01/examples/VirtualHubGet.json b/specification/network/resource-manager/Microsoft.Network/stable/2020-06-01/examples/VirtualHubGet.json
index 101954dca13f..bb710d5673c4 100644
--- a/specification/network/resource-manager/Microsoft.Network/stable/2020-06-01/examples/VirtualHubGet.json
+++ b/specification/network/resource-manager/Microsoft.Network/stable/2020-06-01/examples/VirtualHubGet.json
@@ -26,7 +26,8 @@
           "virtualRouterIps": [
             "10.10.1.12",
             "10.10.1.13"
-          ]
+          ],
+          "enableVirtualRouterRoutePropogation": false
         }
       }
     }
diff --git a/specification/network/resource-manager/Microsoft.Network/stable/2020-06-01/examples/VirtualHubList.json b/specification/network/resource-manager/Microsoft.Network/stable/2020-06-01/examples/VirtualHubList.json
index a2dabd45ccfc..a159a5716f7b 100644
--- a/specification/network/resource-manager/Microsoft.Network/stable/2020-06-01/examples/VirtualHubList.json
+++ b/specification/network/resource-manager/Microsoft.Network/stable/2020-06-01/examples/VirtualHubList.json
@@ -61,7 +61,8 @@
               "virtualRouterIps": [
                 "10.10.1.12",
                 "10.10.1.13"
-              ]
+              ],
+              "enableVirtualRouterRoutePropogation": false
             }
           },
           {
@@ -118,7 +119,8 @@
               "virtualRouterIps": [
                 "10.10.1.12",
                 "10.10.1.13"
-              ]
+              ],
+              "enableVirtualRouterRoutePropogation": false
             }
           }
         ]
diff --git a/specification/network/resource-manager/Microsoft.Network/stable/2020-06-01/examples/VirtualHubListByResourceGroup.json b/specification/network/resource-manager/Microsoft.Network/stable/2020-06-01/examples/VirtualHubListByResourceGroup.json
index 6fe48dc5334a..e3057aea13a0 100644
--- a/specification/network/resource-manager/Microsoft.Network/stable/2020-06-01/examples/VirtualHubListByResourceGroup.json
+++ b/specification/network/resource-manager/Microsoft.Network/stable/2020-06-01/examples/VirtualHubListByResourceGroup.json
@@ -62,7 +62,8 @@
               "virtualRouterIps": [
                 "10.10.1.12",
                 "10.10.1.13"
-              ]
+              ],
+              "enableVirtualRouterRoutePropogation": false
             }
           },
           {
diff --git a/specification/network/resource-manager/Microsoft.Network/stable/2020-06-01/examples/VirtualHubPut.json b/specification/network/resource-manager/Microsoft.Network/stable/2020-06-01/examples/VirtualHubPut.json
index 7096ed144811..0d7ca4048ffd 100644
--- a/specification/network/resource-manager/Microsoft.Network/stable/2020-06-01/examples/VirtualHubPut.json
+++ b/specification/network/resource-manager/Microsoft.Network/stable/2020-06-01/examples/VirtualHubPut.json
@@ -39,7 +39,8 @@
           "virtualRouterIps": [
             "10.10.1.12",
             "10.10.1.13"
-          ]
+          ],
+          "enableVirtualRouterRoutePropogation": false
         }
       }
     },
@@ -63,7 +64,8 @@
           "virtualRouterIps": [
             "10.10.1.12",
             "10.10.1.13"
-          ]
+          ],
+          "enableVirtualRouterRoutePropogation": false
         }
       }
     }
diff --git a/specification/network/resource-manager/Microsoft.Network/stable/2020-06-01/examples/VirtualHubUpdateTags.json b/specification/network/resource-manager/Microsoft.Network/stable/2020-06-01/examples/VirtualHubUpdateTags.json
index 9809127fd650..72610baa582a 100644
--- a/specification/network/resource-manager/Microsoft.Network/stable/2020-06-01/examples/VirtualHubUpdateTags.json
+++ b/specification/network/resource-manager/Microsoft.Network/stable/2020-06-01/examples/VirtualHubUpdateTags.json
@@ -35,7 +35,8 @@
           "virtualRouterIps": [
             "10.10.1.12",
             "10.10.1.13"
-          ]
+          ],
+          "enableVirtualRouterRoutePropogation": false
         }
       }
     }
diff --git a/specification/network/resource-manager/Microsoft.Network/stable/2020-06-01/networkVirtualAppliance.json b/specification/network/resource-manager/Microsoft.Network/stable/2020-06-01/networkVirtualAppliance.json
index 835c2722dbfc..905060fb1e01 100644
--- a/specification/network/resource-manager/Microsoft.Network/stable/2020-06-01/networkVirtualAppliance.json
+++ b/specification/network/resource-manager/Microsoft.Network/stable/2020-06-01/networkVirtualAppliance.json
@@ -716,6 +716,11 @@
           "description": "Network Virtual Appliance SKU.",
           "$ref": "#/definitions/VirtualApplianceSkuProperties"
         },
+        "addressPrefix": {
+          "type": "string",
+          "readOnly": true,
+          "description": "Address Prefix."
+        },
         "bootStrapConfigurationBlobs": {
           "type": "array",
           "readOnly": false,
diff --git a/specification/network/resource-manager/Microsoft.Network/stable/2020-06-01/virtualWan.json b/specification/network/resource-manager/Microsoft.Network/stable/2020-06-01/virtualWan.json
index 5b4341542871..8d2a88bf0849 100644
--- a/specification/network/resource-manager/Microsoft.Network/stable/2020-06-01/virtualWan.json
+++ b/specification/network/resource-manager/Microsoft.Network/stable/2020-06-01/virtualWan.json
@@ -5246,6 +5246,11 @@
           "items": {
             "type": "string"
           }
+        },
+        "enableVirtualRouterRoutePropogation": {
+          "type": "boolean",
+          "readOnly": false,
+          "description": "Flag to control route propogation for VirtualRouter hub."
         }
       },
       "description": "Parameters for VirtualHub."