diff --git a/common.cpp b/common.cpp
index 608b515..c5f5ed9 100644
--- a/common.cpp
+++ b/common.cpp
@@ -395,6 +395,52 @@ return 0;
 }
 
 #if defined(__MINGW32__)
+int inet_pton(int af, const char *src, void *dst)
+{
+  struct sockaddr_storage ss;
+  int size = sizeof(ss);
+  char src_copy[INET6_ADDRSTRLEN+1];
+
+  ZeroMemory(&ss, sizeof(ss));
+  /* stupid non-const API */
+  strncpy (src_copy, src, INET6_ADDRSTRLEN+1);
+  src_copy[INET6_ADDRSTRLEN] = 0;
+
+  if (WSAStringToAddress(src_copy, af, NULL, (struct sockaddr *)&ss, &size) == 0) {
+    switch(af) {
+      case AF_INET:
+    *(struct in_addr *)dst = ((struct sockaddr_in *)&ss)->sin_addr;
+    return 1;
+      case AF_INET6:
+    *(struct in6_addr *)dst = ((struct sockaddr_in6 *)&ss)->sin6_addr;
+    return 1;
+    }
+  }
+  return 0;
+}
+
+const char *inet_ntop(int af, const void *src, char *dst, socklen_t size)
+{
+  struct sockaddr_storage ss;
+  unsigned long s = size;
+
+  ZeroMemory(&ss, sizeof(ss));
+  ss.ss_family = af;
+
+  switch(af) {
+    case AF_INET:
+      ((struct sockaddr_in *)&ss)->sin_addr = *(struct in_addr *)src;
+      break;
+    case AF_INET6:
+      ((struct sockaddr_in6 *)&ss)->sin6_addr = *(struct in6_addr *)src;
+      break;
+    default:
+      return NULL;
+  }
+  /* cannot direclty use &size because of strict aliasing rules */
+  return (WSAAddressToString((struct sockaddr *)&ss, sizeof(ss), NULL, dst, &s) == 0)?
+          dst : NULL;
+}
 char *get_sock_error()
 {
 	static char buf[1000];
diff --git a/common.h b/common.h
index f6e8fe9..998abfa 100644
--- a/common.h
+++ b/common.h
@@ -42,6 +42,7 @@
 
 #if defined(__MINGW32__)
 #include <winsock2.h>
+#include <ws2ipdef.h>
 typedef unsigned char u_int8_t;
 typedef unsigned short u_int16_t;
 typedef unsigned int u_int32_t;
@@ -96,6 +97,8 @@ using  namespace std;
 
 
 #if defined(__MINGW32__)
+int inet_pton(int af, const char *src, void *dst);
+const char *inet_ntop(int af, const void *src, char *dst, socklen_t size);
 #define setsockopt(a,b,c,d,e) setsockopt(a,b,c,(const char *)(d),e)
 #endif