...but then also have to compare against the intended IP address, which might have a custom override, see #582

management/dns_update.py

@@ -851,6 +851,12 @@ def set_secondary_dns(hostnames, env):
 	return do_dns_update(env)
 
 
+def get_custom_dns_record(custom_dns, qname, rtype):
+	for qname1, rtype1, value in custom_dns:
+		if qname1 == qname and rtype1 == rtype:
+			return value
+	return None
+
 ########################################################################
 
 def justtestingdotemail(domain, records):