diff --git a/xos/services/onos/admin.py b/xos/services/onos/admin.py
index 4989fb2..d5696b4 100644
--- a/xos/services/onos/admin.py
+++ b/xos/services/onos/admin.py
@@ -18,15 +18,32 @@
 from django.core.urlresolvers import reverse
 from django.contrib.admin.utils import quote
 
+class ONOSServiceForm(forms.ModelForm):
+    use_external_host = forms.CharField(required=False)
+
+    def __init__(self,*args,**kwargs):
+        super (ONOSServiceForm,self ).__init__(*args,**kwargs)
+        if self.instance:
+            # fields for the attributes
+            self.fields['use_external_host'].initial = self.instance.use_external_host
+
+    def save(self, commit=True):
+        self.instance.use_external_host = self.cleaned_data.get("use_external_host")
+        return super(ONOSServiceForm, self).save(commit=commit)
+
+    class Meta:
+        model = ONOSService
+
 class ONOSServiceAdmin(ReadOnlyAwareAdmin):
     model = ONOSService
     verbose_name = "ONOS Service"
     verbose_name_plural = "ONOS Services"
     list_display = ("backend_status_icon", "name", "enabled")
     list_display_links = ('backend_status_icon', 'name', )
-    fieldsets = [(None, {'fields': ['backend_status_text', 'name','enabled','versionNumber', 'description',"view_url","icon_url" ], 'classes':['suit-tab suit-tab-general']})]
+    fieldsets = [(None, {'fields': ['backend_status_text', 'name','enabled','versionNumber', 'description',"view_url","icon_url", "use_external_host" ], 'classes':['suit-tab suit-tab-general']})]
     readonly_fields = ('backend_status_text', )
     inlines = [SliceInline,ServiceAttrAsTabInline,ServicePrivilegeInline]
+    form = ONOSServiceForm
 
     extracontext_registered_admins = True
 
@@ -48,7 +65,7 @@
 class ONOSAppForm(forms.ModelForm):
     creator = forms.ModelChoiceField(queryset=User.objects.all())
     name = forms.CharField()
-    dependencies = forms.CharField()
+    dependencies = forms.CharField(required=False)
 
     def __init__(self,*args,**kwargs):
         super (ONOSAppForm,self ).__init__(*args,**kwargs)
diff --git a/xos/services/onos/models.py b/xos/services/onos/models.py
index b47dd10..8ed3618 100644
--- a/xos/services/onos/models.py
+++ b/xos/services/onos/models.py
@@ -21,6 +21,16 @@
         verbose_name = "ONOS Service"
         proxy = True
 
+    default_attributes = {"use_external_host": ""}
+
+    @property
+    def use_external_host(self):
+        return self.get_attribute("use_external_host", self.default_attributes["use_external_host"])
+
+    @use_external_host.setter
+    def use_external_host(self, value):
+        self.set_attribute("use_external_host", value)
+
 class ONOSApp(Tenant):   # aka 'ONOSTenant'
     class Meta:
         proxy = True
@@ -28,7 +38,7 @@
     KIND = ONOS_KIND
 
     default_attributes = {"name": "",
-                          "dependencies": ""}
+                          "dependencies": "",}
     def __init__(self, *args, **kwargs):
         onos_services = ONOSService.get_service_objects().all()
         if onos_services: