diff --git a/test/parallel/test-net-options-lookup.js b/test/parallel/test-net-options-lookup.js
new file mode 100644
index 00000000000000..da23830b12ac30
--- /dev/null
+++ b/test/parallel/test-net-options-lookup.js
@@ -0,0 +1,34 @@
+'use strict';
+const common = require('../common');
+const assert = require('assert');
+const net = require('net');
+
+const expectedError = /^TypeError: "lookup" option should be a function$/;
+
+['foobar', 1, {}, []].forEach((input) => connectThrows(input));
+
+function connectThrows(input) {
+  const opts = {
+    host: 'localhost',
+    port: common.PORT,
+    lookup: input
+  };
+
+  assert.throws(function() {
+    net.connect(opts);
+  }, expectedError);
+}
+
+[() => {}].forEach((input) => connectDoesNotThrow(input));
+
+function connectDoesNotThrow(input) {
+  const opts = {
+    host: 'localhost',
+    port: common.PORT,
+    lookup: input
+  };
+
+  assert.doesNotThrow(function() {
+    net.connect(opts);
+  });
+}