Added new testcase from Bull.
diff --git a/runtest/syscalls b/runtest/syscalls
index c4ee7b2..09727e8 100644
--- a/runtest/syscalls
+++ b/runtest/syscalls
@@ -249,6 +249,7 @@
 link03 link03
 link04 link04
 link05 link05
+link06 link06
 
 listen01 listen01