From 52eef846587bfae70d82003119d76332709a5ca8 Mon Sep 17 00:00:00 2001
From: Travis Wellman <travis@archive.org>
Date: Thu, 12 Apr 2012 17:34:21 -0700
Subject: [PATCH] note about preselector.recheckScope for use of
 IpAddressSetDecideRule

---
 .../archive/modules/deciderules/IpAddressSetDecideRule.java  | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/modules/src/main/java/org/archive/modules/deciderules/IpAddressSetDecideRule.java b/modules/src/main/java/org/archive/modules/deciderules/IpAddressSetDecideRule.java
index de8546d0..8d51fbd5 100644
--- a/modules/src/main/java/org/archive/modules/deciderules/IpAddressSetDecideRule.java
+++ b/modules/src/main/java/org/archive/modules/deciderules/IpAddressSetDecideRule.java
@@ -12,6 +12,11 @@ import org.archive.modules.net.ServerCache;
 import org.springframework.beans.factory.annotation.Autowired;
 
 /**
+ * IpAddressSetDecideRule must be used with
+ * {@link org.archive.crawler.prefetch.Preselector#setRecheckScope(boolean)} set
+ * to true because it relies on Heritrix' dns lookup to establish the ip address
+ * for a URI before it can run.
+ * 
  * <pre>
  * &lt;bean class="org.archive.modules.deciderules.IpAddressSetDecideRule"&gt;
  *  &lt;property name="ipAddresses"&gt;