diff --git a/ip.cpp.rl b/ip.cpp.rl
index b1a8995b..e22de767 100644
--- a/ip.cpp.rl
+++ b/ip.cpp.rl
@@ -27,6 +27,10 @@
 using namespace std;
 
 
+const ipv4::ip ipv4::ip::LOOPBACK ({ 127, 0, 0, 1 });
+const ipv4::ip ipv4::ip::ANY      ({   0, 0, 0, 0 });
+
+
 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 4829a5eb..a97597f3 100644
--- a/ip.hpp
+++ b/ip.hpp
@@ -34,6 +34,9 @@ namespace ipv4 {
         bool operator == (const ip &) const; 
 
         static ip parse (const std::string &);
+
+        static const ip LOOPBACK;
+        static const ip ANY;
     };