diff --git a/src/regression/inet_ntop-v4mapped.c b/src/regression/inet_ntop-v4mapped.c
new file mode 100644
index 0000000..cd9023c
--- /dev/null
+++ b/src/regression/inet_ntop-v4mapped.c
@@ -0,0 +1,21 @@
+// commit: 1cd417bdf10366d63cc875e285c6418709a58c17 2013-07-25
+// inet_ntop should use ipv4 notation for v4mapped addresses
+#include <string.h>
+#include <arpa/inet.h>
+#include "test.h"
+
+int main(void)
+{
+	char *expect = "::ffff:192.168.0.1";
+	char buf[100];
+	char addr[16];
+	if (inet_pton(AF_INET6, expect, addr) == 1) {
+		if (!inet_ntop(AF_INET6, addr, buf, sizeof buf))
+			t_error("inet_ntop failed\n");
+		else if (!strchr(buf, '.'))
+			t_error("inet_ntop produced %s instead of %s\n", buf, expect);
+	} else {
+		t_error("inet_pton failed\n");
+	}
+	return t_status;
+}