explain a bit more what N_IP_CLUSTERS actually means

svn:r20332

bridgedb.conf

@@ -31,6 +31,9 @@ DB_LOG_FILE = "./bridgedist.log"
 MASTER_KEY_FILE = "./secret_key"
 
 # How many clusters do we group IPs in when distributing bridges based on IP?
+# Note that if PROXY_LIST_FILES is set (below), what we actually do here
+# is use one higher than the number here, and the extra cluster is used
+# for answering requests made by IP addresses in the PROXY_LIST_FILES file.
 N_IP_CLUSTERS = 4
 
 # If possible, always give a certain number of answers with a given ORPort.