diff --git a/doc/install.sgml b/doc/install.sgml
index 1da62b04a756574a1ea8d7e33c46d6f2dc2c3be9..cb5cb1f963f0c8f87100bc73792dbf0458cc667d 100644
--- a/doc/install.sgml
+++ b/doc/install.sgml
@@ -698,7 +698,9 @@ gnt-cluster init <replaceable>CLUSTERNAME</replaceable>
         nodes names for a multi-node cluster. In general the best
         choice is to have a unique name for a cluster, even if it
         consists of only one machine, as you will be able to expand it
-        later without any problems.
+        later without any problems. Please note that the hostname used
+        for this must resolve to an IP address reserved exclusively
+        for this purpose.
       </para>
 
       <para>
diff --git a/man/gnt-cluster.sgml b/man/gnt-cluster.sgml
index 3af3978bdd7498fe28ad2f0ba4f9abca4b37ed04..13150e15ae8b1113fa3ade5361d9d956be9b653a 100644
--- a/man/gnt-cluster.sgml
+++ b/man/gnt-cluster.sgml
@@ -228,8 +228,8 @@
         Note that the <replaceable>clustername</replaceable> is not
         any random name. It has to be resolvable to an IP address
         using DNS, and it is best if you give the fully-qualified
-        domain name. Also it is advisable to reserve a per-cluster
-        unique name, and not try to reuse one of the nodes' names.
+        domain name. This hostname must resolve to an IP address
+        reserved exclusively for this purpose.
       </para>
 
       <para>