diff --git a/test/ip.cpp b/test/ip.cpp
index 78eab909..2b15df4d 100644
--- a/test/ip.cpp
+++ b/test/ip.cpp
@@ -4,6 +4,7 @@
 #include "../debug.hpp"
 #include "../types.hpp"
 
+#include <arpa/inet.h>
 #include <cstdlib>
 
 
@@ -21,8 +22,15 @@ main (int argc, char **argv) {
         {       "127.0.0.1", { 127,   0,   0,   1 } }
     };
 
-    for (unsigned int i = 0; i < elems (data); ++i)
-        check_hard (ipv4::ip::parse (data[i].str) == data[i].ip);
+    for (unsigned int i = 0; i < elems (data); ++i) {
+        ipv4::ip parsed (ipv4::ip::parse (data[i].str));
+        check_hard (parsed == data[i].ip);
+
+        uint32_t mine = *(uint32_t*)(parsed.m_octets),
+                 theirs;
+        check_hard (inet_pton (AF_INET, data[i].str, &theirs) == 1);
+        check_hard (theirs == mine);
+    }
 
     return EXIT_SUCCESS;
 }