diff --git a/socks.py b/socks.py
index 83b1435..002ed87 100644
--- a/socks.py
+++ b/socks.py
@@ -343,7 +343,7 @@ def bind(self, *pos, **kw):
         # some relays drop packets if a port of zero is specified.
         # Avoid specifying host address in case of NAT though.
         _, port = self.getsockname()
-        dst = ("0", port)
+        dst = ("0.0.0.0", port)
 
         self._proxyconn = _orig_socket()
         proxy = self._proxy_addr()