diff --git a/src/netre.h b/src/netre.h
new file mode 100644
index 0000000..02db5ac
--- /dev/null
+++ b/src/netre.h
@@ -0,0 +1,23 @@
+#ifndef __NETRE_H__
+#define __NETRE_H__
+#include "config.h"
+
+#define WHICHOUT(x) (x ? stderr : stdout)
+
+#ifdef DEBUGSTMTS
+/*@notfunction@*/
+#   define DDUMPf(fmt, args...) fprintf(stderr, "[@%s:%s():%d] " fmt "\n", __FILE__, __FUNCTION__, __LINE__, ##args)
+#else
+/*@notfunction@*/
+#   define DDUMPf(fmt, args...)
+#endif
+
+#define DDUMP(v)   DDUMPf("%s", v)
+#define DDUMP_d(v) DDUMPf("%s = %d",   #v, v)
+#define DDUMP_u(v) DDUMPf("%s = %u",   #v, v)
+#define DDUMP_x(v) DDUMPf("%s = 0x%x", #v, v)
+#define DDUMP_s(v) DDUMPf("%s = %s",   #v, v)
+#define DDUMP_c(v) DDUMPf("%s = %c",   #v, v)
+#define DDUMP_p(v) DDUMPf("%s = %p",   #v, v)
+
+#endif /* __NETRE_H__ */