Holy crap, never had a link back to www intersphinx from doc site???

sites/docs/conf.py

@@ -1,8 +1,9 @@
 # Obtain shared config values
 import os, sys
+from os.path import abspath, join, dirname
 
-sys.path.append(os.path.abspath(".."))
-sys.path.append(os.path.abspath("../.."))
+sys.path.append(abspath(".."))
+sys.path.append(abspath("../.."))
 from shared_conf import *
 
 # Enable autodoc, intersphinx
@@ -11,6 +12,13 @@
 # Autodoc settings
 autodoc_default_flags = ["members", "special-members"]
 
+# Default is 'local' building, but reference the public www site when building
+# under RTD.
+target = join(dirname(__file__), "..", "www", "_build")
+if os.environ.get("READTHEDOCS") == "True":
+    target = "http://paramiko.org"
+intersphinx_mapping["www"] = (target, None)
+
 # Sister-site links to WWW
 html_theme_options["extra_nav_links"] = {
     "Main website": "http://www.paramiko.org"