diff --git a/test/case/ietf_interfaces/iface_phys_address.py b/test/case/ietf_interfaces/iface_phys_address.py
new file mode 100755
index 00000000..44c6009b
--- /dev/null
+++ b/test/case/ietf_interfaces/iface_phys_address.py
@@ -0,0 +1,44 @@
+#!/usr/bin/env python3
+
+import copy
+import infamy
+import infamy.iface as iface
+
+
+with infamy.Test() as test:
+    with test.step("Initialize"):
+        env = infamy.Env(infamy.std_topology("1x2"))
+        target = env.attach("target", "mgmt")
+        _, tport = env.ltop.xlate("target", "data")
+        pmac = iface.get_phys_address(target, tport)
+        cmac = "02:01:00:c0:ff:ee"
+        print(f"Target iface {tport} original mac {pmac}")
+
+    with test.step("Set custom MAC address"):
+        config = {
+            "interfaces": {
+                "interface": [{
+                    "name": f"{tport}",
+                    "type": "infix-if-type:ethernet",
+                    "phys-address": f"{cmac}"
+                }]
+            }
+        }
+        target.put_config_dict("ietf-interfaces", config)
+        mac = iface.get_phys_address(target, tport)
+        print(f"Target iface {tport} current mac: {mac}")
+        assert mac == cmac
+
+    with test.step(f"Remove custom MAC address"):
+        running = target.get_config_dict("/ietf-interfaces:interfaces")
+        new = copy.deepcopy(running)
+        for i in new["interfaces"]["interface"]:
+            if i["name"] == tport:
+                del i["phys-address"]
+                break
+        target.put_diff_dicts("ietf-interfaces", running, new)
+        mac = iface.get_phys_address(target, tport)
+        print(f"Target iface {tport} current mac: {mac}")
+        assert mac == pmac
+
+    test.succeed()