diff --git a/subiquitycore/controllers/network.py b/subiquitycore/controllers/network.py
index d2aac0da..6a578278 100644
--- a/subiquitycore/controllers/network.py
+++ b/subiquitycore/controllers/network.py
@@ -91,8 +91,17 @@ class SubiquityNetworkEventReceiver(NetworkEventReceiver):
         self.controller.update_has_default_route(self.has_default_route)
 
     def _default_route_exists(self, routes):
-        return any(route['table'] == 254 and not route['dst']
-                   for route in routes)
+        for route in routes:
+            if int(route['table']) != 254:
+                continue
+            if route['dst']:
+                continue
+            if int(route['priority']) >= 20000:
+                # network manager probes routes by creating one at 20000 +
+                # the real metric, but those aren't necessarily valid.
+                continue
+            return True
+        return False
 
     def probe_default_routes(self):
         with pyroute2.NDB() as ndb:
diff --git a/subiquitycore/controllers/tests/test_network.py b/subiquitycore/controllers/tests/test_network.py
index e8970af6..aec6d17e 100644
--- a/subiquitycore/controllers/tests/test_network.py
+++ b/subiquitycore/controllers/tests/test_network.py
@@ -34,12 +34,13 @@ class TestRoutes(unittest.IsolatedAsyncioTestCase):
             "ifname": "ens3",
             "dst": "",
             "dst_len": 0,
+            "priority": 100,
             "gateway": "10.0.2.2"
         }]
 
         self.assertTrue(self.er._default_route_exists(routes))
 
-    def test_one_good_one_other(self):
+    def test_mix(self):
         routes = [{
             "target": "localhost",
             "tflags": 0,
@@ -47,6 +48,7 @@ class TestRoutes(unittest.IsolatedAsyncioTestCase):
             "ifname": "ens3",
             "dst": "",
             "dst_len": 0,
+            "priority": 100,
             "gateway": "10.0.2.2"
         }, {
             "target": "localhost",
@@ -55,6 +57,25 @@ class TestRoutes(unittest.IsolatedAsyncioTestCase):
             "ifname": "ens3",
             "dst": "10.0.2.0",
             "dst_len": 24,
+            "priority": 100,
+            "gateway": None
+        }, {
+            "target": "localhost",
+            "tflags": 0,
+            "table": 255,
+            "ifname": "ens3",
+            "dst": "10.0.2.0",
+            "dst_len": 24,
+            "priority": 100,
+            "gateway": None
+        }, {
+            "target": "localhost",
+            "tflags": 0,
+            "table": 254,
+            "ifname": "ens3",
+            "dst": "10.0.2.0",
+            "dst_len": 24,
+            "priority": 20100,
             "gateway": None
         }]
 
@@ -68,6 +89,7 @@ class TestRoutes(unittest.IsolatedAsyncioTestCase):
             "ifname": "ens3",
             "dst": "10.0.2.0",
             "dst_len": 24,
+            "priority": 100,
             "gateway": None
         }]
 
@@ -81,6 +103,21 @@ class TestRoutes(unittest.IsolatedAsyncioTestCase):
             "ifname": "ens3",
             "dst": "",
             "dst_len": 0,
+            "priority": 100,
+            "gateway": "10.0.2.2"
+        }]
+
+        self.assertFalse(self.er._default_route_exists(routes))
+
+    def test_wrong_priority(self):
+        routes = [{
+            "target": "localhost",
+            "tflags": 0,
+            "table": 254,
+            "ifname": "ens3",
+            "dst": "",
+            "dst_len": 0,
+            "priority": 20100,
             "gateway": "10.0.2.2"
         }]