diff --git a/tests/test_connect_delay.cpp b/tests/test_connect_delay.cpp
index a9e7aede..6dfc817f 100644
--- a/tests/test_connect_delay.cpp
+++ b/tests/test_connect_delay.cpp
@@ -41,7 +41,7 @@ int main (void)
     val = 0;
     rc = zmq_setsockopt(to, ZMQ_LINGER, &val, sizeof(val));
     assert (rc == 0);
-    rc = zmq_bind (to, "tcp://*:6555");
+    rc = zmq_bind (to, "tcp://127.0.0.1:6555");
     assert (rc == 0);
 
     // Create a socket pushing to two endpoints - only 1 message should arrive.
@@ -100,7 +100,7 @@ int main (void)
     // Bind the valid socket
     to = zmq_socket (context, ZMQ_PULL);
     assert (to);
-    rc = zmq_bind (to, "tcp://*:5560");
+    rc = zmq_bind (to, "tcp://127.0.0.1:5560");
     assert (rc == 0);
 
     val = 0;
@@ -174,7 +174,7 @@ int main (void)
     int on = 1;
     rc = zmq_setsockopt (frontend, ZMQ_DELAY_ATTACH_ON_CONNECT, &on, sizeof (on));
     assert (rc == 0);
-    rc = zmq_bind (backend, "tcp://*:5560");
+    rc = zmq_bind (backend, "tcp://127.0.0.1:5560");
     assert (rc == 0);
     rc = zmq_connect (frontend, "tcp://localhost:5560");
     assert (rc == 0);
@@ -205,7 +205,7 @@ int main (void)
     assert (backend);
     rc = zmq_setsockopt (backend, ZMQ_LINGER, &zero, sizeof (zero));
     assert (rc == 0);
-    rc = zmq_bind (backend, "tcp://*:5560");
+    rc = zmq_bind (backend, "tcp://127.0.0.1:5560");
     assert (rc == 0);
 
     //  Ping backend to frontend so we know when the connection is up
diff --git a/tests/test_disconnect_inproc.cpp b/tests/test_disconnect_inproc.cpp
index 49c9e5c5..1b0fd317 100644
--- a/tests/test_disconnect_inproc.cpp
+++ b/tests/test_disconnect_inproc.cpp
@@ -39,7 +39,7 @@ int main(int argc, char** argv) {
     zmq_setsockopt(subSocket, ZMQ_SUBSCRIBE, "foo", 3)  && printf("zmq_setsockopt: %s\n",zmq_strerror(errno));
   
     zmq_bind(pubSocket, "inproc://someInProcDescriptor") && printf("zmq_bind: %s\n", zmq_strerror(errno));
-    //zmq_bind(pubSocket, "tcp://*:30010") && printf("zmq_bind: %s\n", zmq_strerror(errno));
+    //zmq_bind(pubSocket, "tcp://127.0.0.1:30010") && printf("zmq_bind: %s\n", zmq_strerror(errno));
   
     int more;
     size_t more_size = sizeof(more);
diff --git a/tests/test_probe_router.cpp b/tests/test_probe_router.cpp
index 2f6930df..71884575 100644
--- a/tests/test_probe_router.cpp
+++ b/tests/test_probe_router.cpp
@@ -28,7 +28,7 @@ int main (void)
     //  Create server and bind to endpoint
     void *server = zmq_socket (ctx, ZMQ_ROUTER);
     assert (server);
-    int rc = zmq_bind (server, "tcp://*:5560");
+    int rc = zmq_bind (server, "tcp://127.0.0.1:5560");
     assert (rc == 0);
 
     //  Create client and connect to server, doing a probe
diff --git a/tests/test_req_request_ids.cpp b/tests/test_req_request_ids.cpp
index 9a83e9aa..85150ec2 100644
--- a/tests/test_req_request_ids.cpp
+++ b/tests/test_req_request_ids.cpp
@@ -42,7 +42,7 @@ int main (void)
     rc = zmq_connect (req, "tcp://localhost:5555");
     assert (rc == 0);
 
-    rc = zmq_bind (router, "tcp://*:5555");
+    rc = zmq_bind (router, "tcp://127.0.0.1:5555");
     assert (rc == 0);
 
     // Send a multi-part request.
diff --git a/tests/test_req_strict.cpp b/tests/test_req_strict.cpp
index 71709098..0b926d77 100644
--- a/tests/test_req_strict.cpp
+++ b/tests/test_req_strict.cpp
@@ -36,7 +36,7 @@ int main (void)
     rc = zmq_setsockopt (req, ZMQ_REQ_REQUEST_IDS, &enabled, sizeof (int));
     assert (rc == 0);
 
-    rc = zmq_bind (req, "tcp://*:5555");
+    rc = zmq_bind (req, "tcp://127.0.0.1:5555");
     assert (rc == 0);
 
     const size_t services = 5;
diff --git a/tests/test_security_curve.cpp b/tests/test_security_curve.cpp
index 436345e3..e7b6c1ee 100644
--- a/tests/test_security_curve.cpp
+++ b/tests/test_security_curve.cpp
@@ -109,7 +109,7 @@ int main (void)
     assert (rc == 0);
     rc = zmq_setsockopt (server, ZMQ_IDENTITY, "IDENT", 6);
     assert (rc == 0);
-    rc = zmq_bind (server, "tcp://*:9998");
+    rc = zmq_bind (server, "tcp://127.0.0.1:9998");
     assert (rc == 0);
 
     //  Check CURVE security with valid credentials
diff --git a/tests/test_security_null.cpp b/tests/test_security_null.cpp
index 0cf0a51a..8a55632d 100644
--- a/tests/test_security_null.cpp
+++ b/tests/test_security_null.cpp
@@ -83,12 +83,12 @@ int main (void)
     
     //  We first test client/server with no ZAP domain
     //  Libzmq does not call our ZAP handler, the connect must succeed
-    rc = zmq_bind (server, "tcp://*:9000");
+    rc = zmq_bind (server, "tcp://127.0.0.1:9000");
     assert (rc == 0);
     rc = zmq_connect (client, "tcp://localhost:9000");
     assert (rc == 0);
     bounce (server, client);
-    zmq_unbind (server, "tcp://*:9000");
+    zmq_unbind (server, "tcp://127.0.0.1:9000");
     zmq_disconnect (client, "tcp://localhost:9000");
     
     //  Now define a ZAP domain for the server; this enables 
@@ -111,18 +111,18 @@ int main (void)
     ////  The above code should not be required
     //rc = zmq_setsockopt (server, ZMQ_ZAP_DOMAIN, "WRONG", 5);
     //assert (rc == 0);
-    //rc = zmq_bind (server, "tcp://*:9001");
+    //rc = zmq_bind (server, "tcp://127.0.0.1:9001");
     //assert (rc == 0);
     //rc = zmq_connect (client, "tcp://localhost:9001");
     //assert (rc == 0);
     //expect_bounce_fail (server, client);
-    //zmq_unbind (server, "tcp://*:9001");
+    //zmq_unbind (server, "tcp://127.0.0.1:9001");
     //zmq_disconnect (client, "tcp://localhost:9001");
     
     //  Now use the right domain, the test must pass
     rc = zmq_setsockopt (server, ZMQ_ZAP_DOMAIN, "TEST", 4);
     assert (rc == 0);
-    rc = zmq_bind (server, "tcp://*:9002");
+    rc = zmq_bind (server, "tcp://127.0.0.1:9002");
     assert (rc == 0);
     rc = zmq_connect (client, "tcp://localhost:9002");
     assert (rc == 0);
@@ -132,7 +132,7 @@ int main (void)
     //  never succeeds and the test hangs.
     //  **************************************************************
     bounce (server, client);
-    zmq_unbind (server, "tcp://*:9002");
+    zmq_unbind (server, "tcp://127.0.0.1:9002");
     zmq_disconnect (client, "tcp://localhost:9002");
     
     //  Shutdown
diff --git a/tests/test_security_plain.cpp b/tests/test_security_plain.cpp
index 8522d593..4f914f4e 100644
--- a/tests/test_security_plain.cpp
+++ b/tests/test_security_plain.cpp
@@ -90,7 +90,7 @@ int main (void)
     int as_server = ZMQ_SERVER;
     rc = zmq_setsockopt (server, ZMQ_PLAIN_NODE, &as_server, sizeof (int));
     assert (rc == 0);
-    rc = zmq_bind (server, "tcp://*:9998");
+    rc = zmq_bind (server, "tcp://127.0.0.1:9998");
     assert (rc == 0);
 
     char username [256];
diff --git a/tests/test_spec_dealer.cpp b/tests/test_spec_dealer.cpp
index 08b54290..7d36d869 100644
--- a/tests/test_spec_dealer.cpp
+++ b/tests/test_spec_dealer.cpp
@@ -222,7 +222,7 @@ int main (void)
     void *ctx = zmq_ctx_new ();
     assert (ctx);
 
-    const char *binds [] = { "inproc://a", "tcp://*:5555" };
+    const char *binds [] = { "inproc://a", "tcp://127.0.0.1:5555" };
     const char *connects [] = { "inproc://a", "tcp://localhost:5555" };
 
     for (int transports = 0; transports < 2; ++transports) {
diff --git a/tests/test_spec_pushpull.cpp b/tests/test_spec_pushpull.cpp
index 6c5c620e..42305d9e 100644
--- a/tests/test_spec_pushpull.cpp
+++ b/tests/test_spec_pushpull.cpp
@@ -260,7 +260,7 @@ int main (void)
     void *ctx = zmq_ctx_new ();
     assert (ctx);
 
-    const char *binds [] = { "inproc://a", "tcp://*:5555" };
+    const char *binds [] = { "inproc://a", "tcp://127.0.0.1:5555" };
     const char *connects [] = { "inproc://a", "tcp://localhost:5555" };
 
     for (int transport = 0; transport < 2; ++transport) {
diff --git a/tests/test_spec_rep.cpp b/tests/test_spec_rep.cpp
index 291787d6..22d6f95b 100644
--- a/tests/test_spec_rep.cpp
+++ b/tests/test_spec_rep.cpp
@@ -125,7 +125,7 @@ int main (void)
     void *ctx = zmq_ctx_new ();
     assert (ctx);
 
-    const char *binds [] = { "inproc://a", "tcp://*:5555" };
+    const char *binds [] = { "inproc://a", "tcp://127.0.0.1:5555" };
     const char *connects [] = { "inproc://a", "tcp://localhost:5555" };
 
     for (int transport = 0; transport < 2; ++transport) {
diff --git a/tests/test_spec_req.cpp b/tests/test_spec_req.cpp
index 1520beab..83619acd 100644
--- a/tests/test_spec_req.cpp
+++ b/tests/test_spec_req.cpp
@@ -217,7 +217,7 @@ int main (void)
     void *ctx = zmq_ctx_new ();
     assert (ctx);
 
-    const char *binds [] = { "inproc://a", "tcp://*:5555" };
+    const char *binds [] = { "inproc://a", "tcp://127.0.0.1:5555" };
     const char *connects [] = { "inproc://a", "tcp://localhost:5555" };
 
     for (int transport = 0; transport < 2; transport++) {
diff --git a/tests/test_spec_router.cpp b/tests/test_spec_router.cpp
index 22bc54b9..e85d3c95 100644
--- a/tests/test_spec_router.cpp
+++ b/tests/test_spec_router.cpp
@@ -179,7 +179,7 @@ int main (void)
     void *ctx = zmq_ctx_new ();
     assert (ctx);
 
-    const char *binds [] = { "inproc://a", "tcp://*:5555" };
+    const char *binds [] = { "inproc://a", "tcp://127.0.0.1:5555" };
     const char *connects [] = { "inproc://a", "tcp://localhost:5555" };
 
     for (int transport = 0; transport < 2; ++transport) {
diff --git a/tests/test_stream.cpp b/tests/test_stream.cpp
index 2c7392c1..4ec8d446 100644
--- a/tests/test_stream.cpp
+++ b/tests/test_stream.cpp
@@ -54,7 +54,7 @@ test_stream_to_dealer (void)
     int zero = 0;
     rc = zmq_setsockopt (stream, ZMQ_LINGER, &zero, sizeof (zero));
     assert (rc == 0);
-    rc = zmq_bind (stream, "tcp://*:5556");
+    rc = zmq_bind (stream, "tcp://127.0.0.1:5556");
     assert (rc == 0);
 
     //  We'll be using this socket as the other peer
@@ -173,7 +173,7 @@ test_stream_to_stream (void)
     
     void *server = zmq_socket (ctx, ZMQ_STREAM);
     assert (server);
-    rc = zmq_bind (server, "tcp://*:8080");
+    rc = zmq_bind (server, "tcp://127.0.0.1:8080");
     assert (rc == 0);
 
     void *client = zmq_socket (ctx, ZMQ_STREAM);