Zones can be clients of NFS version 2, version 3, and version 4. For information about these NFS versions, see Features of the NFS Service in Managing Network File Systems in Oracle Solaris 11.4.
The default version is NFS version 4. You can enable other NFS versions on a client by using one of the following methods:
You can edit /etc/default/nfs to set NFS_CLIENT_VERSMAX=number so that the zone uses the specified version by default. See Setting Up the NFS Service in Managing Network File Systems in Oracle Solaris 11.4.
You can manually create a version mount. This method overrides the contents of /etc/default/nfs. See Setting Up the NFS Service in Managing Network File Systems in Oracle Solaris 11.4. Use the procedure "How to Use the Command Line to Select Different Versions of NFS on a Client from the task map.