IPv6 Deployment Status: latest error msg for uq.edu.au

Error(s) found during latest scan: NS=ns4.dc.uq.edu.au=2600:1f18:62f:6a00:d6a:7ff9:cfea:3688 does not respond, NS=ns3.dc.uq.edu.au=2406:da1c:221:9600:33d2:9a26:3e8