NFS mount fails with permission denied error because client not using IP allowed in export policy rule

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Category:: ontap-9

Specialty:: nas

Last Updated:

Applies to

ONTAP 9
NFS
IPv4 and IPv6

Issue

When try to mount the NFS on client, getting below error:

[root@linux ~]# mount -t nfs Ontap_IP:/NFS_IPV6 /mnt

mount.nfs: mount(2): Permission denied

Client fails to evaluate an export policy when multiple IP address are assigned.
IP "2620:118:8010:1096:250:56ff:fea6:fbb7" is allowed in clientmatch in export policy on Ontap:

cluster::*> export-policy rule show -vserver vs1 -policyname NFS_policy -instance List of Client Match Hostnames, IP Addresses, Netgroups, or Domains: 2620:118:8010:1096:250:56ff:fea6:fbb7

However, there are multiple interfaces on client and has multiple IP addresses assigned:

Example for IPv6:

[root@linux ~]# ifconfig eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet6 2620:118:8010:1096:250:56ff:fea6:a895 prefixlen 64 scopeid 0x0<global>

eth1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet6 2620:118:8010:1096:250:56ff:fea6:fbb7 prefixlen 64 scopeid 0x0<global>

Example for IPv4:

[root@xcpserver2 ~]# ifconfig ens192: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet 10.216.41.xx netmask 255.255.255.0 broadcast 10.216.41.255 inet6 fe80::af37:bb4:1eff:ebb prefixlen 64 scopeid 0x20<link>

virbr0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500 inet 192.168.122.xx netmask 255.255.255.0 broadcast 192.168.122.255 ether 52:54:00:42:dd:94 txqueuelen 1000 (Ethernet)