RFC 4242 support.
diff --git a/dnsmasq.conf.example b/dnsmasq.conf.example
index bde2fb3..4a4ac5b 100644
--- a/dnsmasq.conf.example
+++ b/dnsmasq.conf.example
@@ -326,6 +326,9 @@
 # dnsmasq and another.
 #dhcp-option=option6:dns-server,[::],[1234::88]
 
+# Ask client to poll for option changes every six hours. (RFC4242)
+#dhcp-option=option6:information-refresh-time,6h
+
 # Set the NTP time server address to be the same machine as
 # is running dnsmasq
 #dhcp-option=42,0.0.0.0