diff --git a/test/client.c b/test/client.c
index c9cab92..b2690a0 100644
--- a/test/client.c
+++ b/test/client.c
@@ -66,11 +66,11 @@ usage:
     goto usage;
   }
   if (byte_equal(ip,12,V4mappedprefix)) {
-    s=socket_tcp4();
+    s=socket_tcp4b();
     if (s==-1) panic("client: error: socket() failed");
     if (socket_connect4(s,ip+12,port)==-1) panic("client: error: connect() failed");
   } else {
-    s=socket_tcp6();
+    s=socket_tcp6b();
     if (s==-1) panic("client: error: socket() failed");
     if (socket_connect6(s,ip,port,scope_id)==-1) panic("client: error: connect() failed");
   }
diff --git a/test/dllink.c b/test/dllink.c
index 191ed16..4015b22 100644
--- a/test/dllink.c
+++ b/test/dllink.c
@@ -8,7 +8,7 @@
 #include "ndelay.h"
 
 int main(int argc,char* argv[]) {
-  int s=socket_tcp4();
+  int s=socket_tcp4b();
   char line[1024];
   char buf[4096];
   int l;
diff --git a/test/httpd.c b/test/httpd.c
index 4c9f60f..bd47a24 100644
--- a/test/httpd.c
+++ b/test/httpd.c
@@ -182,7 +182,7 @@ e404:
 }
 
 int main() {
-  int s=socket_tcp6();
+  int s=socket_tcp6b();
   uint32 scope_id;
   char ip[16];
   uint16 port;
diff --git a/test/server.c b/test/server.c
index 61425c7..f5e66be 100644
--- a/test/server.c
+++ b/test/server.c
@@ -69,14 +69,14 @@ usage:
     goto usage;
   }
   if (byte_equal(ip,12,V4mappedprefix)) {
-    s=socket_tcp4();
+    s=socket_tcp4b();
     if (s==-1) panic("server: error: socket() failed");
     if (socket_bind4_reuse(s,ip+12,port)==-1) panic("server: error: bind() failed");
     if (socket_listen(s,1)==-1) panic("server: error: listen() failed");
     ndelay_off(s);
     if ((t=socket_accept4(s,0,0))==-1) panic("server: error: accept() failed");
   } else {
-    s=socket_tcp6();
+    s=socket_tcp6b();
     if (s==-1) panic("server: error: socket() failed");
     if (socket_bind6_reuse(s,ip,port,scope_id)==-1) panic("server: error: bind() failed");
     if (socket_listen(s,1)==-1) panic("server: error: listen() failed");
diff --git a/test/vd.c b/test/vd.c
index 7185973..ac6d5f9 100644
--- a/test/vd.c
+++ b/test/vd.c
@@ -6,7 +6,7 @@
 #include "ndelay.h"
 
 int main(int argc,char* argv[]) {
-  int s=socket_tcp4();
+  int s=socket_tcp4b();
   char line[1024];
   char buf[4096];
   int l;