src/share/classes/java/net/NetworkInterface.java

@@ -450,10 +450,15 @@
                     // don't have connect permission to any local address
                     return null;
                 }
             }
         }
+        return getHardwareAddress0();
+    }
+
+    // the same as getHardwareAddress(), but without security checks
+    byte[] getHardwareAddress0() throws SocketException {
         for (InetAddress addr : addrs) {
             if (addr instanceof Inet4Address) {
                 return getMacAddr0(((Inet4Address)addr).getAddress(), name, index);
             }
         }