diff --git a/netbox_agent/lshw.py b/netbox_agent/lshw.py
index 381c5414..ab3912f2 100644
--- a/netbox_agent/lshw.py
+++ b/netbox_agent/lshw.py
@@ -82,6 +82,9 @@ def find_network(self, obj):
                         unkn_intfs.append(j)
 
         unkn_name = "unknown{}".format(len(unkn_intfs))
+        if len(obj.get("serial", "").split(":")) == 20:
+            # Infiniband GUID, extract MAC
+            obj["serial"] = obj["serial"][:17]
         self.interfaces.append(
             {
                 "name": obj.get("logicalname", unkn_name),