diff --git a/changelog.d/96.added b/changelog.d/96.added
new file mode 100644
index 0000000..0bc6658
--- /dev/null
+++ b/changelog.d/96.added
@@ -0,0 +1 @@
+Allow setting virt-bridge to "none" or empty to disable all network configuration
diff --git a/koan/virtinstall.py b/koan/virtinstall.py
index efb697f..cd4cef5 100644
--- a/koan/virtinstall.py
+++ b/koan/virtinstall.py
@@ -146,9 +146,8 @@ def _sanitize_nics(nics, bridge, profile_bridge, network_count):
         if not bridge:
             intf_bridge = intf["virt_bridge"]
             if intf_bridge == "":
-                if profile_bridge == "":
-                    raise InfoException("virt-bridge setting is not defined in cobbler")
-                intf_bridge = profile_bridge
+                if profile_bridge != "":
+                    intf_bridge = profile_bridge
 
         else:
             if bridge.find(",") == -1:
@@ -157,7 +156,8 @@ def _sanitize_nics(nics, bridge, profile_bridge, network_count):
                 bridges = bridge.split(",")
                 intf_bridge = bridges[counter]
 
-        ret.append((intf_bridge, mac))
+        if intf_bridge != "":
+            ret.append((intf_bridge, mac))
 
     return ret
 
@@ -308,8 +308,9 @@ def build_commandline(
             bridge = profile_data["virt_bridge"]
 
         if bridge == "":
-            raise InfoException("virt-bridge setting is not defined in cobbler")
-        nics = [(bridge, None)]
+            nics = [("none", None)]
+        else:
+            nics = [(bridge, None)]
 
     kernel = profile_data.get("kernel_local")
     initrd = profile_data.get("initrd_local")
@@ -456,7 +457,10 @@ def build_commandline(
         cmd += "--disk path=%s,device=floppy " % floppy
 
     for bridge, mac in nics:
-        cmd += "--network bridge=%s" % bridge
+        if bridge == "none":
+            cmd += "--network none"
+        else:
+            cmd += "--network bridge=%s" % bridge
         if net_model and not disable_net_model:
             cmd += ",model=%s" % net_model
         if mac: