Requirements for using IPv6
Before you can use IPv6 on your SMB server, you need to know which versions of ONTAP and SMB support it and what the license requirements are.
ONTAP license requirements
No special license is required for IPv6 when SMB is licensed.
SMB protocol version requirements
For SVMs, ONTAP supports IPv6 on all versions of the SMB protocol.
NetBIOS name service (NBNS) over IPv6 is not supported.