diff --git a/RangeHTTPServer/__main__.py b/RangeHTTPServer/__main__.py
index 00c9eb4..b5312dd 100755
--- a/RangeHTTPServer/__main__.py
+++ b/RangeHTTPServer/__main__.py
@@ -21,10 +21,25 @@
 from . import RangeRequestHandler
 
 import argparse
+import contextlib
+import socket
+
+
+class DualStackServer(SimpleHTTPServer.ThreadingHTTPServer):
+    def server_bind(self):
+        # suppress exception when protocol is IPv4
+        with contextlib.suppress(Exception):
+            self.socket.setsockopt(
+                socket.IPPROTO_IPV6, socket.IPV6_V6ONLY, 0)
+        return super().server_bind()
+
+
 parser = argparse.ArgumentParser()
 parser.add_argument('port', action='store',
                     default=8000, type=int,
                     nargs='?', help='Specify alternate port [default: 8000]')
 
 args = parser.parse_args()
-SimpleHTTPServer.test(HandlerClass=RangeRequestHandler, port=args.port)
+SimpleHTTPServer.test(HandlerClass=RangeRequestHandler,
+                      ServerClass=DualStackServer,
+                      port=args.port)