Index: modules/univention/s4connector/s4/dns.py
===================================================================
--- modules/univention/s4connector/s4/dns.py	(Revision 67708)
+++ modules/univention/s4connector/s4/dns.py	(Arbeitskopie)
@@ -491,14 +491,14 @@
 		dnsRecords.append(ndr_pack(a_record))
 
 def __unpack_aRecord(object):
-	a=[]
+	a=set()
 	dnsRecords=object['attributes'].get('dnsRecord', [])
 	for dnsRecord in dnsRecords:
 		dnsRecord=dnsRecord.encode('latin1')
 		ndrRecord=ndr_unpack(dnsp.DnssrvRpcRecord, dnsRecord)
 		if ndrRecord.wType == dnsp.DNS_TYPE_A or ndrRecord.wType == dnsp.DNS_TYPE_AAAA:
-			a.append(ndrRecord.data)
-	return a
+			a.add(ndrRecord.data)
+	return list(a)
 
 def __pack_soaRecord(object, dnsRecords):
 	soaRecord=object['attributes'].get('sOARecord', [None])[0]