bin/servedir in servedir-0.4 vs bin/servedir in servedir-0.5

@@ -1,15 +1,17 @@
 #!/usr/bin/env ruby
 
-# This is free and unencumbered software released into the public domain.
-# See the `UNLICENSE` file or <http://unlicense.org/> for more details.
+# This is free software released into the public domain (CC0 license).
+#
+# See the `COPYING` file or <http://creativecommons.org/publicdomain/zero/1.0/>
+# for more details.
 
 require 'open-uri'
 require 'socket'
 require 'timeout'
 require 'webrick'
 
-IP_DISCO_SERVICE = 'http://automation.whatismyip.com/n09230945.asp'
+IP_DISCO_SERVICE = 'http://ipecho.net/plain'
 LAN_IP = '169.254.0.1'
 PRIVATE_LIST_FILE = '.private'
 MAX_PORT = 2**16
 MAX_DISCOVER_WAIT = 4 # seconds