diff --git a/ddclient b/ddclient
index 6a033db..db87c1f 100755
--- a/ddclient
+++ b/ddclient
@@ -5701,6 +5701,9 @@ EoEXAMPLE
 }
 ######################################################################
 ## nic_dnsexit_update
+## Need update URL in this format:
+##   http://update.dnsexit.com/RemoteUpdate.sv?login=yourlogin&password=your_ip_update_password&host=yourhost.yourdomain.com&myip=xxx.xx.xx.xxx
+## Successful responses are: '0=Success', '1=IP is the same as the IP on the system', '4=IP not changed. To save our system resources, please don't post updates unless the IP got changed.'
 ######################################################################
 sub nic_dnsexit_update {
     debug("\nnic_dnsexit_update -------------------");