diff --git a/pym/calculate/lib/utils/ip.py b/pym/calculate/lib/utils/ip.py
index 13e5b11..86f75c6 100644
--- a/pym/calculate/lib/utils/ip.py
+++ b/pym/calculate/lib/utils/ip.py
@@ -246,6 +246,9 @@ def getInterfaces():
             return False
         if device.sysfs.exists(x, "bonding_slave"):
             return False
+        # exclude slave devices
+        if any(device.sysfs.glob(x, "lower_*")):
+            return False
         return True
 
     return sorted(path.basename(x)