diff --git a/programs/pkey/dh_client.c b/programs/pkey/dh_client.c
index 5315eb9..ba0ca92 100644
--- a/programs/pkey/dh_client.c
+++ b/programs/pkey/dh_client.c
@@ -135,7 +135,7 @@
     fflush( stdout );
 
     if( ( ret = net_connect( &server_fd, SERVER_NAME,
-                                         SERVER_PORT ) ) != 0 )
+                                         SERVER_PORT, NET_PROTO_TCP ) ) != 0 )
     {
         printf( " failed\n  ! net_connect returned %d\n\n", ret );
         goto exit;
diff --git a/programs/pkey/dh_server.c b/programs/pkey/dh_server.c
index 976da4c..d4eb613 100644
--- a/programs/pkey/dh_server.c
+++ b/programs/pkey/dh_server.c
@@ -163,7 +163,7 @@
     printf( "\n  . Waiting for a remote connection" );
     fflush( stdout );
 
-    if( ( ret = net_bind( &listen_fd, NULL, SERVER_PORT ) ) != 0 )
+    if( ( ret = net_bind( &listen_fd, NULL, SERVER_PORT, NET_PROTO_TCP ) ) != 0 )
     {
         printf( " failed\n  ! net_bind returned %d\n\n", ret );
         goto exit;
diff --git a/programs/ssl/ssl_client1.c b/programs/ssl/ssl_client1.c
index 1b369a6..f1b4e6d 100644
--- a/programs/ssl/ssl_client1.c
+++ b/programs/ssl/ssl_client1.c
@@ -140,7 +140,7 @@
     fflush( stdout );
 
     if( ( ret = net_connect( &server_fd, SERVER_NAME,
-                                         SERVER_PORT ) ) != 0 )
+                                         SERVER_PORT, NET_PROTO_TCP ) ) != 0 )
     {
         printf( " failed\n  ! net_connect returned %d\n\n", ret );
         goto exit;
diff --git a/programs/ssl/ssl_client2.c b/programs/ssl/ssl_client2.c
index c0a957b..9aacfee 100644
--- a/programs/ssl/ssl_client2.c
+++ b/programs/ssl/ssl_client2.c
@@ -844,7 +844,7 @@
     fflush( stdout );
 
     if( ( ret = net_connect( &server_fd, opt.server_addr,
-                                         opt.server_port ) ) != 0 )
+                             opt.server_port, NET_PROTO_TCP ) ) != 0 )
     {
         printf( " failed\n  ! net_connect returned -0x%x\n\n", -ret );
         goto exit;
@@ -1260,7 +1260,7 @@
         }
 
         if( ( ret = net_connect( &server_fd, opt.server_name,
-                        opt.server_port ) ) != 0 )
+                                 opt.server_port , NET_PROTO_TCP) ) != 0 )
         {
             printf( " failed\n  ! net_connect returned -0x%x\n\n", -ret );
             goto exit;
diff --git a/programs/ssl/ssl_fork_server.c b/programs/ssl/ssl_fork_server.c
index 706cdd4..7c759a2 100644
--- a/programs/ssl/ssl_fork_server.c
+++ b/programs/ssl/ssl_fork_server.c
@@ -179,7 +179,7 @@
     printf( "  . Bind on https://localhost:4433/ ..." );
     fflush( stdout );
 
-    if( ( ret = net_bind( &listen_fd, NULL, 4433 ) ) != 0 )
+    if( ( ret = net_bind( &listen_fd, NULL, 4433, NET_PROTO_TCP ) ) != 0 )
     {
         printf( " failed\n  ! net_bind returned %d\n\n", ret );
         goto exit;
diff --git a/programs/ssl/ssl_mail_client.c b/programs/ssl/ssl_mail_client.c
index 4cf59d0..4e6602a 100644
--- a/programs/ssl/ssl_mail_client.c
+++ b/programs/ssl/ssl_mail_client.c
@@ -574,7 +574,7 @@
     fflush( stdout );
 
     if( ( ret = net_connect( &server_fd, opt.server_name,
-                                         opt.server_port ) ) != 0 )
+                             opt.server_port, NET_PROTO_TCP ) ) != 0 )
     {
         printf( " failed\n  ! net_connect returned %d\n\n", ret );
         goto exit;
diff --git a/programs/ssl/ssl_pthread_server.c b/programs/ssl/ssl_pthread_server.c
index 9a4c554..c19e3e0 100644
--- a/programs/ssl/ssl_pthread_server.c
+++ b/programs/ssl/ssl_pthread_server.c
@@ -445,7 +445,7 @@
     printf( "  . Bind on https://localhost:4433/ ..." );
     fflush( stdout );
 
-    if( ( ret = net_bind( &listen_fd, NULL, 4433 ) ) != 0 )
+    if( ( ret = net_bind( &listen_fd, NULL, 4433, NET_PROTO_TCP ) ) != 0 )
     {
         printf( " failed\n  ! net_bind returned %d\n\n", ret );
         goto exit;
diff --git a/programs/ssl/ssl_server.c b/programs/ssl/ssl_server.c
index 9e09799..962b098 100644
--- a/programs/ssl/ssl_server.c
+++ b/programs/ssl/ssl_server.c
@@ -159,7 +159,7 @@
     printf( "  . Bind on https://localhost:4433/ ..." );
     fflush( stdout );
 
-    if( ( ret = net_bind( &listen_fd, NULL, 4433 ) ) != 0 )
+    if( ( ret = net_bind( &listen_fd, NULL, 4433, NET_PROTO_TCP ) ) != 0 )
     {
         printf( " failed\n  ! net_bind returned %d\n\n", ret );
         goto exit;
diff --git a/programs/ssl/ssl_server2.c b/programs/ssl/ssl_server2.c
index fcc8adb..51a4213 100644
--- a/programs/ssl/ssl_server2.c
+++ b/programs/ssl/ssl_server2.c
@@ -1246,7 +1246,7 @@
     fflush( stdout );
 
     if( ( ret = net_bind( &listen_fd, opt.server_addr,
-                                      opt.server_port ) ) != 0 )
+                                      opt.server_port, NET_PROTO_TCP ) ) != 0 )
     {
         printf( " failed\n  ! net_bind returned -0x%x\n\n", -ret );
         goto exit;
diff --git a/programs/test/ssl_test.c b/programs/test/ssl_test.c
index b436d17..9bde5de 100644
--- a/programs/test/ssl_test.c
+++ b/programs/test/ssl_test.c
@@ -193,7 +193,7 @@
     if( opt->opmode == OPMODE_CLIENT )
     {
         if( ( ret = net_connect( &client_fd, opt->server_name,
-                                             opt->server_port ) ) != 0 )
+                                 opt->server_port, NET_PROTO_TCP ) ) != 0 )
         {
             printf( "  ! net_connect returned %d\n\n", ret );
             return( ret );
@@ -242,7 +242,7 @@
         if( server_fd < 0 )
         {
             if( ( ret = net_bind( &server_fd, NULL,
-                                   opt->server_port ) ) != 0 )
+                                   opt->server_port, NET_PROTO_TCP ) ) != 0 )
             {
                 printf( "  ! net_bind returned %d\n\n", ret );
                 return( ret );
diff --git a/programs/x509/cert_app.c b/programs/x509/cert_app.c
index 5f8636b..8b528a8 100644
--- a/programs/x509/cert_app.c
+++ b/programs/x509/cert_app.c
@@ -402,7 +402,7 @@
         fflush( stdout );
 
         if( ( ret = net_connect( &server_fd, opt.server_name,
-                                             opt.server_port ) ) != 0 )
+                                 opt.server_port, NET_PROTO_TCP ) ) != 0 )
         {
             printf( " failed\n  ! net_connect returned %d\n\n", ret );
             goto exit;