README.config: Further restrict server name

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>

diff --git a/README.config b/README.config
index f6054da5b3ef2a78c123c181dae3ecc7f9eb738f..5bd6daf2e4bb1f5a3acd01eb88ebb2b46ef5b477 100644 (file)
--- a/README.config
+++ b/README.config
@@ -10,7 +10,8 @@ Sections
 
 Keys are looked up in that order, unless otherwise specified.
 <client> is the client's virtual address.
-<servername> must be a valid DNS hostname and not look like an address.
+<servername> must be a valid lowercase DNS hostname and not look like 
+an address, or be COMMON, DEFAULT or SERVER.
 
 Things not in a section are an error.