diff --git a/examples/gmail.phps b/examples/gmail.phps
index b020f338..b3cc02d5 100644
--- a/examples/gmail.phps
+++ b/examples/gmail.phps
@@ -26,6 +26,9 @@ $mail->Debugoutput = 'html';
 
 //Set the hostname of the mail server
 $mail->Host = 'smtp.gmail.com';
+// use
+// $mail->Host = gethostbyname('smtp.gmail.com');
+// if your network does not support SMTP over IPv6
 
 //Set the SMTP port number - 587 for authenticated TLS, a.k.a. RFC4409 SMTP submission
 $mail->Port = 587;