This absolutely requires external configuration to work.
Start Here:
https://docs.netapp.com/us-en/ontap/networking/balance_network_loads_to_optimize_user_traffic_@cluster_administrators_only@_overview.html
Read through and you will see a link to:
https://kb.netapp.com/onprem/ontap/da/NAS/How_to_set_up_DNS_load_balancing_in_ONTAP
You need to setup a delegation/forwarder on your actual DNS server
If your domain is company.com and your SVM is svm.company.com, you come up with a new name, like cifs.company.com. You setup the NetApp LIFs in the SVM to respond to cifs.company.com. Then you go to your DNS server and setup a forwarder or delegation to point to all your configured LIFs on the SVM with dns enabled.
When you get it finished, you should be able to:
nslookup cifs.company.com
-> your dns server will forward and the NetApp will ultimately respond.
TO test the NetApp to make sure it is correct:
nslookup - <ip-of_SVM-lif>
Then type cifs.company.com
The NetApp should be the authoritative answer and send back IPs