diff --git a/tests/exp/testinet.c b/tests/exp/testinet.c
new file mode 100644
index 0000000..0eb87e9
--- /dev/null
+++ b/tests/exp/testinet.c
@@ -0,0 +1,28 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <ctype.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/tcp.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <netdb.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <signal.h>
+#include <stdarg.h>
+#include <sys/resource.h>
+#include <time.h>
+#include <regex.h>
+#include <syslog.h>
+
+
+int main() {
+    printf("sizeof sockaddr=%d\n", sizeof(struct sockaddr));
+    printf("sizeof sockaddr_in=%d\n", sizeof(struct sockaddr_in));
+    printf("sizeof sockaddr_in6=%d\n", sizeof(struct sockaddr_in6));
+    return 0;
+}