From cdc078dc6e1c61a77275aadc419fa4d65923b4a9 Mon Sep 17 00:00:00 2001
From: Stefan Schantl <stefan.schantl@ipfire.org>
Date: Tue, 15 Jul 2014 12:03:43 +0200
Subject: [PATCH] dynu: Fix updating if no IPv6 address is available.

---
 src/ddns/providers.py | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/src/ddns/providers.py b/src/ddns/providers.py
index aeca64d..4e35a99 100644
--- a/src/ddns/providers.py
+++ b/src/ddns/providers.py
@@ -516,9 +516,11 @@ class DDNSProviderDynU(DDNSProtocolDynDNS2, DDNSProvider):
 		data = DDNSProtocolDynDNS2._prepare_request_data(self)
 
 		# This one supports IPv6
-		data.update({
-			"myipv6"   : self.get_address("ipv6"),
-		})
+		myipv6 = self.get_address("ipv6")
+
+		# Add update information if we have an IPv6 address.
+		if myipv6:
+			data["myipv6"] = myipv6
 
 		return data
 
-- 
2.39.2