If your HTCondor daemons are having problems communicating, and your logs contain messages like this:
-{code}
-> 12/06/12 09:10:59 attempt to connect to <[2607:f388:1086:0:21b:24ff:fedf:b520]:52937> failed: Address family not supported by protocol (connect errno = 97). Will keep trying for 390 total seconds (390 to go).
-{endcode}
+{blockquote}
+12/06/12 09:10:59 attempt to connect to <[2607:f388:1086:0:21b:24ff:fedf:b520]:52937> failed: Address family not supported by protocol (connect errno = 97). Will keep trying for 390 total seconds (390 to go).
+{endblockquote}
The likely cause is that ENABLE_IPV6 has been set in a configuration file specified in LOCAL_CONFIG_FILE or LOCAL_CONFIG_DIR, and not in the global configuration file. The configuration _must_ be in the global configuration file.
