diff --git a/test/test-network/systemd-networkd-tests.py b/test/test-network/systemd-networkd-tests.py
index 71f284fd18..9266441944 100755
--- a/test/test-network/systemd-networkd-tests.py
+++ b/test/test-network/systemd-networkd-tests.py
@@ -475,8 +475,10 @@ def flush_fou_ports():
 
 def flush_l2tp_tunnels():
     tids = []
-    output = check_output('ip l2tp show tunnel')
-    for line in output.splitlines():
+    ret = run('ip l2tp show tunnel')
+    if ret.returncode != 0:
+        return # l2tp may not be supported
+    for line in ret.stdout.splitlines():
         words = line.split()
         if words[0] == 'Tunnel':
             tid = words[1].rstrip(',')