diff --git a/azure-mgmt-network/src/main/java/com/microsoft/azure/management/network/Network.java b/azure-mgmt-network/src/main/java/com/microsoft/azure/management/network/Network.java
index a86c50dfa5331..86744bd6b33b7 100644
--- a/azure-mgmt-network/src/main/java/com/microsoft/azure/management/network/Network.java
+++ b/azure-mgmt-network/src/main/java/com/microsoft/azure/management/network/Network.java
@@ -39,7 +39,7 @@ public interface Network extends
     /**
      * @return list of DNS server IP addresses associated with this virtual network
      */
-    List<String> dnsServerIPs();
+    List<String> dnsServerIps();
 
     /**
      * @return subnets of this virtual network as a map indexed by subnet name
diff --git a/azure-mgmt-network/src/main/java/com/microsoft/azure/management/network/Subnet.java b/azure-mgmt-network/src/main/java/com/microsoft/azure/management/network/Subnet.java
index af5ab4b636230..ae5476e4b2dc1 100644
--- a/azure-mgmt-network/src/main/java/com/microsoft/azure/management/network/Subnet.java
+++ b/azure-mgmt-network/src/main/java/com/microsoft/azure/management/network/Subnet.java
@@ -30,7 +30,7 @@ public interface Subnet extends
      * <p>
      * Note that this method will result in a call to Azure each time it is invoked.
      */
-    NetworkSecurityGroup networkSecurityGroup();
+    NetworkSecurityGroup getNetworkSecurityGroup();
 
     /**
      * Grouping of subnet definition stages.
diff --git a/azure-mgmt-network/src/main/java/com/microsoft/azure/management/network/implementation/NetworkImpl.java b/azure-mgmt-network/src/main/java/com/microsoft/azure/management/network/implementation/NetworkImpl.java
index c63f38accba9f..cc406a361b983 100644
--- a/azure-mgmt-network/src/main/java/com/microsoft/azure/management/network/implementation/NetworkImpl.java
+++ b/azure-mgmt-network/src/main/java/com/microsoft/azure/management/network/implementation/NetworkImpl.java
@@ -6,11 +6,14 @@
 package com.microsoft.azure.management.network.implementation;
 
 import com.microsoft.azure.management.apigeneration.LangDefinition;
+import com.microsoft.azure.management.network.AddressSpace;
+import com.microsoft.azure.management.network.DhcpOptions;
 import com.microsoft.azure.management.network.Network;
 import com.microsoft.azure.management.network.Subnet;
 import com.microsoft.azure.management.resources.fluentcore.arm.models.implementation.GroupableParentResourceImpl;
 import rx.Observable;
 
+import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
 import java.util.Map;
@@ -80,6 +83,14 @@ NetworkManager manager() {
 
     @Override
     public NetworkImpl withDnsServer(String ipAddress) {
+        if (this.inner().dhcpOptions() == null) {
+            this.inner().withDhcpOptions(new DhcpOptions());
+        }
+
+        if (this.inner().dhcpOptions().dnsServers() == null) {
+            this.inner().dhcpOptions().withDnsServers(new ArrayList<String>());
+        }
+
         this.inner().dhcpOptions().dnsServers().add(ipAddress);
         return this;
     }
@@ -108,6 +119,14 @@ public NetworkImpl withoutSubnet(String name) {
 
     @Override
     public NetworkImpl withAddressSpace(String cidr) {
+        if (this.inner().addressSpace() == null) {
+            this.inner().withAddressSpace(new AddressSpace());
+        }
+
+        if (this.inner().addressSpace().addressPrefixes() == null) {
+            this.inner().addressSpace().withAddressPrefixes(new ArrayList<String>());
+        }
+
         this.inner().addressSpace().addressPrefixes().add(cidr);
         return this;
     }
@@ -123,12 +142,26 @@ public SubnetImpl defineSubnet(String name) {
 
     @Override
     public List<String> addressSpaces() {
-        return Collections.unmodifiableList(this.inner().addressSpace().addressPrefixes());
+        List<String> addressSpaces = new ArrayList<String>();
+        if (this.inner().addressSpace() == null) {
+            return Collections.unmodifiableList(addressSpaces);
+        } else if (this.inner().addressSpace().addressPrefixes() == null) {
+            return Collections.unmodifiableList(addressSpaces);
+        } else {
+            return Collections.unmodifiableList(this.inner().addressSpace().addressPrefixes());
+        }
     }
 
     @Override
-    public List<String> dnsServerIPs() {
-        return Collections.unmodifiableList(this.inner().dhcpOptions().dnsServers());
+    public List<String> dnsServerIps() {
+        List<String> ips = new ArrayList<String>();
+        if (this.inner().dhcpOptions() == null) {
+            return Collections.unmodifiableList(ips);
+        } else if (this.inner().dhcpOptions().dnsServers() == null) {
+            return Collections.unmodifiableList(ips);
+        } else {
+            return this.inner().dhcpOptions().dnsServers();
+        }
     }
 
     @Override
diff --git a/azure-mgmt-network/src/main/java/com/microsoft/azure/management/network/implementation/NetworkInterfaceImpl.java b/azure-mgmt-network/src/main/java/com/microsoft/azure/management/network/implementation/NetworkInterfaceImpl.java
index 62b39e13b49b4..b975737141b16 100644
--- a/azure-mgmt-network/src/main/java/com/microsoft/azure/management/network/implementation/NetworkInterfaceImpl.java
+++ b/azure-mgmt-network/src/main/java/com/microsoft/azure/management/network/implementation/NetworkInterfaceImpl.java
@@ -285,22 +285,29 @@ public String macAddress() {
 
     @Override
     public String internalDnsNameLabel() {
-        return this.inner().dnsSettings().internalDnsNameLabel();
+        return (this.inner().dnsSettings() != null) ? this.inner().dnsSettings().internalDnsNameLabel() : null;
     }
 
     @Override
     public String internalDomainNameSuffix() {
-        return this.inner().dnsSettings().internalDomainNameSuffix();
+        return (this.inner().dnsSettings() != null) ? this.inner().dnsSettings().internalDomainNameSuffix() : null;
     }
 
     @Override
     public List<String> appliedDnsServers() {
-        return Collections.unmodifiableList(this.inner().dnsSettings().appliedDnsServers());
+        List<String> dnsServers = new ArrayList<String>();
+        if (this.inner().dnsSettings() == null) {
+            return Collections.unmodifiableList(dnsServers);
+        } else if (this.inner().dnsSettings().appliedDnsServers() == null) {
+            return Collections.unmodifiableList(dnsServers);
+        } else {
+            return Collections.unmodifiableList(this.inner().dnsSettings().appliedDnsServers());
+        }
     }
 
     @Override
     public String internalFqdn() {
-        return this.inner().dnsSettings().internalFqdn();
+        return (this.inner().dnsSettings() != null) ? this.inner().dnsSettings().internalFqdn() : null;
     }
 
     @Override
@@ -325,10 +332,7 @@ public Map<String, NicIpConfiguration> ipConfigurations() {
 
     @Override
     public String networkSecurityGroupId() {
-        if (this.inner().networkSecurityGroup() != null) {
-            return this.inner().networkSecurityGroup().id();
-        }
-        return null;
+        return (this.inner().networkSecurityGroup() != null) ? this.inner().networkSecurityGroup().id() : null;
     }
 
     @Override
@@ -370,10 +374,14 @@ public NicIpConfigurationImpl primaryIpConfiguration() {
      * @return the list of DNS server IPs from the DNS settings
      */
     private List<String> dnsServerIps() {
-        if (this.inner().dnsSettings().dnsServers() == null) {
-            this.inner().dnsSettings().withDnsServers(new ArrayList<String>());
+        List<String> dnsServers = new ArrayList<String>();
+        if (this.inner().dnsSettings() == null) {
+            return dnsServers;
+        } else if (this.inner().dnsSettings().dnsServers() == null) {
+            return dnsServers;
+        } else {
+            return this.inner().dnsSettings().dnsServers();
         }
-        return this.inner().dnsSettings().dnsServers();
     }
 
     @Override
diff --git a/azure-mgmt-network/src/main/java/com/microsoft/azure/management/network/implementation/NicIpConfigurationImpl.java b/azure-mgmt-network/src/main/java/com/microsoft/azure/management/network/implementation/NicIpConfigurationImpl.java
index b245299020eb0..0eeeea2b4bce0 100644
--- a/azure-mgmt-network/src/main/java/com/microsoft/azure/management/network/implementation/NicIpConfigurationImpl.java
+++ b/azure-mgmt-network/src/main/java/com/microsoft/azure/management/network/implementation/NicIpConfigurationImpl.java
@@ -120,17 +120,13 @@ public String subnetName() {
     @Override
     public String networkId() {
         SubResource subnetRef = this.inner().subnet();
-        if (subnetRef != null) {
-            return ResourceUtils.parentResourcePathFromResourceId(subnetRef.id());
-        } else {
-            return null;
-        }
+        return (subnetRef != null) ? ResourceUtils.parentResourcePathFromResourceId(subnetRef.id()) : null;
     }
 
     @Override
     public Network getNetwork() {
         String id = this.networkId();
-        return this.networkManager.networks().getById(id);
+        return (id != null) ? this.networkManager.networks().getById(id) : null;
     }
 
     @Override
diff --git a/azure-mgmt-network/src/main/java/com/microsoft/azure/management/network/implementation/SubnetImpl.java b/azure-mgmt-network/src/main/java/com/microsoft/azure/management/network/implementation/SubnetImpl.java
index f76ef954fa015..f9526818d316b 100644
--- a/azure-mgmt-network/src/main/java/com/microsoft/azure/management/network/implementation/SubnetImpl.java
+++ b/azure-mgmt-network/src/main/java/com/microsoft/azure/management/network/implementation/SubnetImpl.java
@@ -24,7 +24,7 @@ class SubnetImpl
         Subnet.UpdateDefinition<Network.Update>,
         Subnet.Update {
 
-    protected SubnetImpl(SubnetInner inner, NetworkImpl parent) {
+    SubnetImpl(SubnetInner inner, NetworkImpl parent) {
         super(inner, parent);
     }
 
@@ -40,7 +40,7 @@ public String name() {
     }
 
     @Override
-    public NetworkSecurityGroup networkSecurityGroup() {
+    public NetworkSecurityGroup getNetworkSecurityGroup() {
         SubResource nsgResource = this.inner().networkSecurityGroup();
         if (nsgResource == null) {
             return null;
diff --git a/azure-samples/src/main/java/com/microsoft/azure/management/samples/Utils.java b/azure-samples/src/main/java/com/microsoft/azure/management/samples/Utils.java
index 6e299fefc7bef..224fb3fdcd1d1 100644
--- a/azure-samples/src/main/java/com/microsoft/azure/management/samples/Utils.java
+++ b/azure-samples/src/main/java/com/microsoft/azure/management/samples/Utils.java
@@ -198,13 +198,13 @@ public static void print(Network resource) throws CloudException, IOException {
                 .append("\n\tRegion: ").append(resource.region())
                 .append("\n\tTags: ").append(resource.tags())
                 .append("\n\tAddress spaces: ").append(resource.addressSpaces())
-                .append("\n\tDNS server IPs: ").append(resource.dnsServerIPs());
+                .append("\n\tDNS server IPs: ").append(resource.dnsServerIps());
 
         // Output subnets
         for (Subnet subnet : resource.subnets().values()) {
             info.append("\n\tSubnet: ").append(subnet.name())
                     .append("\n\t\tAddress prefix: ").append(subnet.addressPrefix());
-            NetworkSecurityGroup subnetNsg = subnet.networkSecurityGroup();
+            NetworkSecurityGroup subnetNsg = subnet.getNetworkSecurityGroup();
             if (subnetNsg != null) {
                 info.append("\n\t\tNetwork security group: ").append(subnetNsg.id());
             }
diff --git a/azure/src/test/java/com/microsoft/azure/TestNetwork.java b/azure/src/test/java/com/microsoft/azure/TestNetwork.java
index d04cdbc130e10..dbdad0aca5e41 100644
--- a/azure/src/test/java/com/microsoft/azure/TestNetwork.java
+++ b/azure/src/test/java/com/microsoft/azure/TestNetwork.java
@@ -94,7 +94,7 @@ public void print(Network resource) {
                 .append("\n\tRegion: ").append(resource.region())
                 .append("\n\tTags: ").append(resource.tags())
                 .append("\n\tAddress spaces: ").append(resource.addressSpaces())
-                .append("\n\tDNS server IPs: ").append(resource.dnsServerIPs());
+                .append("\n\tDNS server IPs: ").append(resource.dnsServerIps());
 
         // Output subnets
         for (Subnet subnet : resource.subnets().values()) {
@@ -104,7 +104,7 @@ public void print(Network resource) {
 
             NetworkSecurityGroup nsg;
             try {
-                nsg = subnet.networkSecurityGroup();
+                nsg = subnet.getNetworkSecurityGroup();
             } catch (Exception e) {
                 nsg = null;
             }