diff --git a/clisp.changes b/clisp.changes
index 1f0ed8c..cb7acee 100644
--- a/clisp.changes
+++ b/clisp.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Fri Feb 10 08:52:25 UTC 2017 - werner@suse.de
+
+- Collect some informations on the build system for debugging
+  a random error on sockets during test suite
+
 -------------------------------------------------------------------
 Thu Jan 19 12:20:06 UTC 2017 - werner@suse.de
 
diff --git a/clisp.spec b/clisp.spec
index 21c34bc..54f518c 100644
--- a/clisp.spec
+++ b/clisp.spec
@@ -127,6 +127,15 @@ with the file README. The subdirectory
 contains two nice applications.
 
 %prep
+#
+# Collect some informations on the build system for debugging
+# a random error on sockets during test suite
+#
+type -p systemd-detect-virt > /dev/null 2>&1 && systemd-detect-virt
+type -p uname   > /dev/null 2>&1 && uname -a
+type -p netstat > /dev/null 2>&1 && netstat -i
+type -p netstat > /dev/null 2>&1 && netstat -x
+#
 %setup -qT -b0 -n clisp-%uuid
 %patch1  -p1 -b .sel
 %patch2  -p1 -b .wooh