diff --git a/accounts/templates/logout.html b/accounts/templates/logout.html
index eb3a325..eb3b917 100644
--- a/accounts/templates/logout.html
+++ b/accounts/templates/logout.html
@@ -1,4 +1,4 @@
-{% extends "base_auth.html" %}
+{% extends "base.html" %}
 {% load i18n %}
 {% block title %}
     {% trans "WebVirtCloud" %} - {% trans "Sign Out"%}
@@ -14,4 +14,4 @@
             </div>
         </div>
     </div>
-{% endblock %}
\ No newline at end of file
+{% endblock %}
diff --git a/instances/utils.py b/instances/utils.py
index f9f5dcf..19b2111 100644
--- a/instances/utils.py
+++ b/instances/utils.py
@@ -196,7 +196,7 @@ def get_dhcp_mac_address(vname):
 
 
 def get_random_mac_address():
-    mac = "52:54:00:%02x:%02x:%02x" % (
+    mac = settings.MAC_OUI + ":%02x:%02x:%02x" % (
         random.randint(0x00, 0xFF),
         random.randint(0x00, 0xFF),
         random.randint(0x00, 0xFF),
diff --git a/templates/403.html b/templates/403.html
index 4b320b4..6b0a7e8 100644
--- a/templates/403.html
+++ b/templates/403.html
@@ -1,4 +1,4 @@
-{% extends "base_auth.html" %}
+{% extends "base.html" %}
 {% load i18n %}
 {% block title %}{% trans "403" %}{% endblock %}
 {% block content %}
diff --git a/templates/404.html b/templates/404.html
index c631d46..dd42e10 100644
--- a/templates/404.html
+++ b/templates/404.html
@@ -1,4 +1,4 @@
-{% extends "base_auth.html" %}
+{% extends "base.html" %}
 {% load i18n %}
 {% block title %}{% trans "404" %}{% endblock %}
 {% block content %}
diff --git a/vrtManager/util.py b/vrtManager/util.py
index ab47f32..81cb3d5 100644
--- a/vrtManager/util.py
+++ b/vrtManager/util.py
@@ -6,6 +6,8 @@ import string
 import libvirt
 import lxml.etree as etree
 
+from django.conf import UserSettingsHolder, settings
+
 
 def is_kvm_available(xml):
     kvm_domains = get_xml_path(xml, "//domain/@type='kvm'")
@@ -15,10 +17,12 @@ def is_kvm_available(xml):
 def randomMAC():
     """Generate a random MAC address."""
     # qemu MAC
-    oui = [0x52, 0x54, 0x00]
-
-    mac = oui + [random.randint(0x00, 0xFF), random.randint(0x00, 0xFF), random.randint(0x00, 0xFF)]
-    return ":".join(map(lambda x: "%02x" % x, mac))
+    mac = settings.MAC_OUI + ":%02x:%02x:%02x" % (
+        random.randint(0x00, 0xFF),
+        random.randint(0x00, 0xFF),
+        random.randint(0x00, 0xFF),
+    )
+    return mac
 
 
 def randomUUID():
diff --git a/webvirtcloud/settings.py.template b/webvirtcloud/settings.py.template
index 88146c1..d3b9fd9 100644
--- a/webvirtcloud/settings.py.template
+++ b/webvirtcloud/settings.py.template
@@ -15,6 +15,8 @@ SECRET_KEY = ""
 
 DEBUG = False
 
+MAC_OUI = '52:54:10'
+
 ALLOWED_HOSTS = ["*"]
 
 CSRF_TRUSTED_ORIGINS = ['http://localhost',]