commit 7d0956d14ff8d823551ccd47ccf1492c9da9aac9
Author: Stefan Schantl <stefan.schantl@ipfire.org>
Date:   Mon May 25 18:00:51 2020 +0200

    ProviderDDNSS: Fix unhandled exception on update
    
    In python > 3.3 the getheader() attribute is not longer part of the
    urllib.response response.info() object. It is part of response object
    and so directly can be accessed.
    
    Fixes #12328
    
    Signed-off-by: Stefan Schantl <stefan.schantl@ipfire.org>

diff --git a/src/ddns/providers.py b/src/ddns/providers.py
index f1fed22..46d8a67 100644
--- a/src/ddns/providers.py
+++ b/src/ddns/providers.py
@@ -642,10 +642,8 @@ class DDNSProviderDDNSS(DDNSProvider):
 		response = self.send_request(self.url, data=data)
 
 		# This provider sends the response code as part of the header.
-		header = response.info()
-
 		# Get status information from the header.
-		output = header.getheader('ddnss-response')
+		output = response.getheader('ddnss-response')
 
 		# Handle success messages.
 		if output == "good" or output == "nochg":