diff --git a/ip.cpp.rl b/ip.cpp.rl
index 0eb397f6..b0e0e696 100644
--- a/ip.cpp.rl
+++ b/ip.cpp.rl
@@ -35,6 +35,11 @@ const range<ipv4::port> ipv4::WELL_KNOWN_PORT (    0,  1023),
                         ipv4::PRIVATE_PORT    (49152, 65535);
 
 
+ipv4::ip::ip (uint32_t _integer):
+    m_integer (_integer)
+{ ; }
+
+
 ipv4::ip::ip (uint8_t a, uint8_t b, uint8_t c, uint8_t d):
     m_octets ({ a, b, c, d })
 { ; }
diff --git a/ip.hpp b/ip.hpp
index e1202129..feecf3f7 100644
--- a/ip.hpp
+++ b/ip.hpp
@@ -34,6 +34,7 @@ namespace ipv4 {
         };
 
         ip (const std::string &);
+        ip (uint32_t i);
         ip (uint8_t a, uint8_t b, uint8_t c, uint8_t d);
 
         ip&  operator  = (const ip &);