diff --git a/azure-mgmt-network/azure/mgmt/network/v2015_06_15/models/network_interface_ip_configuration.py b/azure-mgmt-network/azure/mgmt/network/v2015_06_15/models/network_interface_ip_configuration.py
index f729fc3eb1ab..c9be3f68e0fa 100644
--- a/azure-mgmt-network/azure/mgmt/network/v2015_06_15/models/network_interface_ip_configuration.py
+++ b/azure-mgmt-network/azure/mgmt/network/v2015_06_15/models/network_interface_ip_configuration.py
@@ -34,6 +34,9 @@ class NetworkInterfaceIPConfiguration(SubResource):
      ~azure.mgmt.network.v2015_06_15.models.IPAllocationMethod
     :param subnet:
     :type subnet: ~azure.mgmt.network.v2015_06_15.models.Subnet
+    :param primary: Gets whether this is a primary customer address on the
+     network interface.
+    :type primary: bool
     :param public_ip_address:
     :type public_ip_address:
      ~azure.mgmt.network.v2015_06_15.models.PublicIPAddress
@@ -54,6 +57,7 @@ class NetworkInterfaceIPConfiguration(SubResource):
         'private_ip_address': {'key': 'properties.privateIPAddress', 'type': 'str'},
         'private_ip_allocation_method': {'key': 'properties.privateIPAllocationMethod', 'type': 'str'},
         'subnet': {'key': 'properties.subnet', 'type': 'Subnet'},
+        'primary': {'key': 'properties.primary', 'type': 'bool'},
         'public_ip_address': {'key': 'properties.publicIPAddress', 'type': 'PublicIPAddress'},
         'provisioning_state': {'key': 'properties.provisioningState', 'type': 'str'},
         'name': {'key': 'name', 'type': 'str'},
@@ -67,6 +71,7 @@ def __init__(self, **kwargs):
         self.private_ip_address = kwargs.get('private_ip_address', None)
         self.private_ip_allocation_method = kwargs.get('private_ip_allocation_method', None)
         self.subnet = kwargs.get('subnet', None)
+        self.primary = kwargs.get('primary', None)
         self.public_ip_address = kwargs.get('public_ip_address', None)
         self.provisioning_state = kwargs.get('provisioning_state', None)
         self.name = kwargs.get('name', None)
diff --git a/azure-mgmt-network/azure/mgmt/network/v2015_06_15/models/network_interface_ip_configuration_py3.py b/azure-mgmt-network/azure/mgmt/network/v2015_06_15/models/network_interface_ip_configuration_py3.py
index 712cbe84962e..e88cb35e893f 100644
--- a/azure-mgmt-network/azure/mgmt/network/v2015_06_15/models/network_interface_ip_configuration_py3.py
+++ b/azure-mgmt-network/azure/mgmt/network/v2015_06_15/models/network_interface_ip_configuration_py3.py
@@ -34,6 +34,9 @@ class NetworkInterfaceIPConfiguration(SubResource):
      ~azure.mgmt.network.v2015_06_15.models.IPAllocationMethod
     :param subnet:
     :type subnet: ~azure.mgmt.network.v2015_06_15.models.Subnet
+    :param primary: Gets whether this is a primary customer address on the
+     network interface.
+    :type primary: bool
     :param public_ip_address:
     :type public_ip_address:
      ~azure.mgmt.network.v2015_06_15.models.PublicIPAddress
@@ -54,19 +57,21 @@ class NetworkInterfaceIPConfiguration(SubResource):
         'private_ip_address': {'key': 'properties.privateIPAddress', 'type': 'str'},
         'private_ip_allocation_method': {'key': 'properties.privateIPAllocationMethod', 'type': 'str'},
         'subnet': {'key': 'properties.subnet', 'type': 'Subnet'},
+        'primary': {'key': 'properties.primary', 'type': 'bool'},
         'public_ip_address': {'key': 'properties.publicIPAddress', 'type': 'PublicIPAddress'},
         'provisioning_state': {'key': 'properties.provisioningState', 'type': 'str'},
         'name': {'key': 'name', 'type': 'str'},
         'etag': {'key': 'etag', 'type': 'str'},
     }
 
-    def __init__(self, *, id: str=None, load_balancer_backend_address_pools=None, load_balancer_inbound_nat_rules=None, private_ip_address: str=None, private_ip_allocation_method=None, subnet=None, public_ip_address=None, provisioning_state: str=None, name: str=None, etag: str=None, **kwargs) -> None:
+    def __init__(self, *, id: str=None, load_balancer_backend_address_pools=None, load_balancer_inbound_nat_rules=None, private_ip_address: str=None, private_ip_allocation_method=None, subnet=None, primary: bool=None, public_ip_address=None, provisioning_state: str=None, name: str=None, etag: str=None, **kwargs) -> None:
         super(NetworkInterfaceIPConfiguration, self).__init__(id=id, **kwargs)
         self.load_balancer_backend_address_pools = load_balancer_backend_address_pools
         self.load_balancer_inbound_nat_rules = load_balancer_inbound_nat_rules
         self.private_ip_address = private_ip_address
         self.private_ip_allocation_method = private_ip_allocation_method
         self.subnet = subnet
+        self.primary = primary
         self.public_ip_address = public_ip_address
         self.provisioning_state = provisioning_state
         self.name = name