diff --git a/sdk/network/azure-mgmt-network/azure/mgmt/network/v2020_04_01/models/__init__.py b/sdk/network/azure-mgmt-network/azure/mgmt/network/v2020_04_01/models/__init__.py
index ab25222309ba..ead0b1a5d901 100644
--- a/sdk/network/azure-mgmt-network/azure/mgmt/network/v2020_04_01/models/__init__.py
+++ b/sdk/network/azure-mgmt-network/azure/mgmt/network/v2020_04_01/models/__init__.py
@@ -921,7 +921,6 @@
     RouteNextHopType,
     PublicIPAddressSkuName,
     DdosSettingsProtectionCoverage,
-    VirtualNetworkPeeringState,
     TransportProtocol,
     ApplicationGatewayCookieBasedAffinity,
     ApplicationGatewayBackendHealthServerHealth,
@@ -1004,6 +1003,7 @@
     PublicIPPrefixSkuName,
     SecurityProviderName,
     SecurityPartnerProviderConnectionStatus,
+    VirtualNetworkPeeringState,
     VirtualNetworkGatewayType,
     VpnType,
     VpnGatewayGeneration,
@@ -1546,7 +1546,6 @@
     'RouteNextHopType',
     'PublicIPAddressSkuName',
     'DdosSettingsProtectionCoverage',
-    'VirtualNetworkPeeringState',
     'TransportProtocol',
     'ApplicationGatewayCookieBasedAffinity',
     'ApplicationGatewayBackendHealthServerHealth',
@@ -1629,6 +1628,7 @@
     'PublicIPPrefixSkuName',
     'SecurityProviderName',
     'SecurityPartnerProviderConnectionStatus',
+    'VirtualNetworkPeeringState',
     'VirtualNetworkGatewayType',
     'VpnType',
     'VpnGatewayGeneration',
diff --git a/sdk/network/azure-mgmt-network/azure/mgmt/network/v2020_04_01/models/_models.py b/sdk/network/azure-mgmt-network/azure/mgmt/network/v2020_04_01/models/_models.py
index 9911655382c3..c62716292457 100644
--- a/sdk/network/azure-mgmt-network/azure/mgmt/network/v2020_04_01/models/_models.py
+++ b/sdk/network/azure-mgmt-network/azure/mgmt/network/v2020_04_01/models/_models.py
@@ -9546,23 +9546,29 @@ def __init__(self, **kwargs):
 class LoadBalancerBackendAddress(Model):
     """Load balancer backend addresses.
 
+    Variables are only populated by the server, and will be ignored when
+    sending a request.
+
     :param virtual_network: Reference to an existing virtual network.
-    :type virtual_network:
-     ~azure.mgmt.network.v2020_04_01.models.VirtualNetwork
+    :type virtual_network: ~azure.mgmt.network.v2020_04_01.models.SubResource
     :param ip_address: IP Address belonging to the referenced virtual network.
     :type ip_address: str
-    :param network_interface_ip_configuration: Reference to IP address defined
+    :ivar network_interface_ip_configuration: Reference to IP address defined
      in network interfaces.
-    :type network_interface_ip_configuration:
-     ~azure.mgmt.network.v2020_04_01.models.NetworkInterfaceIPConfiguration
+    :vartype network_interface_ip_configuration:
+     ~azure.mgmt.network.v2020_04_01.models.SubResource
     :param name: Name of the backend address.
     :type name: str
     """
 
+    _validation = {
+        'network_interface_ip_configuration': {'readonly': True},
+    }
+
     _attribute_map = {
-        'virtual_network': {'key': 'properties.virtualNetwork', 'type': 'VirtualNetwork'},
+        'virtual_network': {'key': 'properties.virtualNetwork', 'type': 'SubResource'},
         'ip_address': {'key': 'properties.ipAddress', 'type': 'str'},
-        'network_interface_ip_configuration': {'key': 'properties.networkInterfaceIPConfiguration', 'type': 'NetworkInterfaceIPConfiguration'},
+        'network_interface_ip_configuration': {'key': 'properties.networkInterfaceIPConfiguration', 'type': 'SubResource'},
         'name': {'key': 'name', 'type': 'str'},
     }
 
@@ -9570,7 +9576,7 @@ def __init__(self, **kwargs):
         super(LoadBalancerBackendAddress, self).__init__(**kwargs)
         self.virtual_network = kwargs.get('virtual_network', None)
         self.ip_address = kwargs.get('ip_address', None)
-        self.network_interface_ip_configuration = kwargs.get('network_interface_ip_configuration', None)
+        self.network_interface_ip_configuration = None
         self.name = kwargs.get('name', None)
 
 
diff --git a/sdk/network/azure-mgmt-network/azure/mgmt/network/v2020_04_01/models/_models_py3.py b/sdk/network/azure-mgmt-network/azure/mgmt/network/v2020_04_01/models/_models_py3.py
index 6c58f30d98cd..1b9fbf32e832 100644
--- a/sdk/network/azure-mgmt-network/azure/mgmt/network/v2020_04_01/models/_models_py3.py
+++ b/sdk/network/azure-mgmt-network/azure/mgmt/network/v2020_04_01/models/_models_py3.py
@@ -9546,31 +9546,37 @@ def __init__(self, *, id: str=None, location: str=None, tags=None, sku=None, fro
 class LoadBalancerBackendAddress(Model):
     """Load balancer backend addresses.
 
+    Variables are only populated by the server, and will be ignored when
+    sending a request.
+
     :param virtual_network: Reference to an existing virtual network.
-    :type virtual_network:
-     ~azure.mgmt.network.v2020_04_01.models.VirtualNetwork
+    :type virtual_network: ~azure.mgmt.network.v2020_04_01.models.SubResource
     :param ip_address: IP Address belonging to the referenced virtual network.
     :type ip_address: str
-    :param network_interface_ip_configuration: Reference to IP address defined
+    :ivar network_interface_ip_configuration: Reference to IP address defined
      in network interfaces.
-    :type network_interface_ip_configuration:
-     ~azure.mgmt.network.v2020_04_01.models.NetworkInterfaceIPConfiguration
+    :vartype network_interface_ip_configuration:
+     ~azure.mgmt.network.v2020_04_01.models.SubResource
     :param name: Name of the backend address.
     :type name: str
     """
 
+    _validation = {
+        'network_interface_ip_configuration': {'readonly': True},
+    }
+
     _attribute_map = {
-        'virtual_network': {'key': 'properties.virtualNetwork', 'type': 'VirtualNetwork'},
+        'virtual_network': {'key': 'properties.virtualNetwork', 'type': 'SubResource'},
         'ip_address': {'key': 'properties.ipAddress', 'type': 'str'},
-        'network_interface_ip_configuration': {'key': 'properties.networkInterfaceIPConfiguration', 'type': 'NetworkInterfaceIPConfiguration'},
+        'network_interface_ip_configuration': {'key': 'properties.networkInterfaceIPConfiguration', 'type': 'SubResource'},
         'name': {'key': 'name', 'type': 'str'},
     }
 
-    def __init__(self, *, virtual_network=None, ip_address: str=None, network_interface_ip_configuration=None, name: str=None, **kwargs) -> None:
+    def __init__(self, *, virtual_network=None, ip_address: str=None, name: str=None, **kwargs) -> None:
         super(LoadBalancerBackendAddress, self).__init__(**kwargs)
         self.virtual_network = virtual_network
         self.ip_address = ip_address
-        self.network_interface_ip_configuration = network_interface_ip_configuration
+        self.network_interface_ip_configuration = None
         self.name = name
 
 
diff --git a/sdk/network/azure-mgmt-network/azure/mgmt/network/v2020_04_01/models/_network_management_client_enums.py b/sdk/network/azure-mgmt-network/azure/mgmt/network/v2020_04_01/models/_network_management_client_enums.py
index 9f471d29f179..cde947fd2069 100644
--- a/sdk/network/azure-mgmt-network/azure/mgmt/network/v2020_04_01/models/_network_management_client_enums.py
+++ b/sdk/network/azure-mgmt-network/azure/mgmt/network/v2020_04_01/models/_network_management_client_enums.py
@@ -86,13 +86,6 @@ class DdosSettingsProtectionCoverage(str, Enum):
     standard = "Standard"
 
 
-class VirtualNetworkPeeringState(str, Enum):
-
-    initiated = "Initiated"
-    connected = "Connected"
-    disconnected = "Disconnected"
-
-
 class TransportProtocol(str, Enum):
 
     udp = "Udp"
@@ -678,6 +671,13 @@ class SecurityPartnerProviderConnectionStatus(str, Enum):
     not_connected = "NotConnected"
 
 
+class VirtualNetworkPeeringState(str, Enum):
+
+    initiated = "Initiated"
+    connected = "Connected"
+    disconnected = "Disconnected"
+
+
 class VirtualNetworkGatewayType(str, Enum):
 
     vpn = "Vpn"