diff --git a/networkapiclient/ClientFactory.py b/networkapiclient/ClientFactory.py
index f24e0c8..2bd8d64 100755
--- a/networkapiclient/ClientFactory.py
+++ b/networkapiclient/ClientFactory.py
@@ -55,6 +55,8 @@
 from networkapiclient.Healthcheck import Healthcheck
 from networkapiclient.ApiVipRequest import ApiVipRequest
 from networkapiclient.ApiInterface import ApiInterfaceRequest
+from networkapiclient.ApiNetworkIPv4 import ApiNetworkIPv4
+from networkapiclient.ApiNetworkIPv6 import ApiNetworkIPv6
 from networkapiclient.Rack import Rack
 from networkapiclient.RackServers import RackServers
 
@@ -409,6 +411,27 @@ def create_api_interface_request(self):
             self.user_ldap
         )
 
+    def create_api_network_ipv4(self):
+
+        """Get an instance of Api Networkv4 services facade."""
+
+        return ApiNetworkIPv4(
+            self.networkapi_url,
+            self.user,
+            self.password,
+            self.user_ldap
+        )
+
+    def create_api_network_ipv6(self):
+
+        """Get an instance of Api Networkv6 services facade."""
+
+        return ApiNetworkIPv6(
+            self.networkapi_url,
+            self.user,
+            self.password,
+            self.user_ldap
+        )
 
     def create_rack(self):
         """Get an instance of rack services facade."""
diff --git a/networkapiclient/Network.py b/networkapiclient/Network.py
index b6f834c..1054c05 100644
--- a/networkapiclient/Network.py
+++ b/networkapiclient/Network.py
@@ -626,9 +626,9 @@ def list(self, networkipv4=None, ipv4=None):
 
         uri = "api/dhcprelayv4/?" 
         if networkipv4:
-          uri += "networkipv4=%d&" % networkipv4
+          uri += "networkipv4=%s&" % networkipv4
         if ipv4:
-          uri += "ipv4=%d" % ipv4
+          uri += "ipv4=%s" % ipv4
 
         return self.get(uri)
 
@@ -753,9 +753,9 @@ def list(self, networkipv6=None, ipv6=None):
 
         uri = "api/dhcprelayv6/?"
         if networkipv6:
-          uri += "networkipv6=%d&" % networkipv6
+          uri += "networkipv6=%s&" % networkipv6
         if ipv6:
-          uri += "ipv6=%d" % ipv6
+          uri += "ipv6=%s" % ipv6
 
         return self.get(uri)
 
diff --git a/networkapiclient/__init__.py b/networkapiclient/__init__.py
index 43c16b1..58aab37 100644
--- a/networkapiclient/__init__.py
+++ b/networkapiclient/__init__.py
@@ -16,6 +16,6 @@
 
 MAJOR_VERSION = '0'
 MINOR_VERSION = '6'
-PATCH_VERSION = '7'
+PATCH_VERSION = '8'
 VERSION = '.'.join((MAJOR_VERSION, MINOR_VERSION, PATCH_VERSION,))
 
diff --git a/networkapiclient/version_control.py b/networkapiclient/version_control.py
index ecd1623..953a9e7 100755
--- a/networkapiclient/version_control.py
+++ b/networkapiclient/version_control.py
@@ -1 +1 @@
-CLIENT_VERSION = '0.6.7'
+CLIENT_VERSION = '0.6.8'