diff --git a/FAQ b/FAQ
index 92b8b9530f..a8d0b71b3d 100644
--- a/FAQ
+++ b/FAQ
@@ -336,3 +336,17 @@ A: Some text editors (notepad and wordpad) fail to put a line termination
 indication (e.g. CR/LF) on the last line of a text file.  This can be fixed
 by "adding" a blank line to the end of the file.  Named expects to see EOF
 immediately after EOL and treats text files where this is not met as truncated.
+
+
+Q: I get warning messages like "zone example.com/IN: refresh: failure trying master
+1.2.3.4#53: timed out".
+
+A: Check that you can make UDP queries from the slave to the master
+	
+	dig +norec example.com soa @1.2.3.4
+
+A: You could be generating queries faster than the slave can cope with.  Lower
+the serial query rate.
+
+	serial-query-rate 5; // default 20
+