QA:Testcase NFS IPv6

Description

IPv6 Testing on NFS should be similar to IPv4 NFS, and when specifying ipv6 address, it needs to be enclosed in square brackets. Link-local and site-local IPv6 addresses must be accompanied by an interface identifier. See the nfs(5) manpage for details:

Setup

1. Prepare an NFS server that is accessible via IPv6 networking
2. On the NFS server, setup a mount point in the file /etc/exports

How to test

1. First, attempt to mount an IPv6-based NFS mount using the mount command. The example below demonstrates mounting a share called /export hosted by the NFS server accessible by it's IPv6 address [2001:470:8:c53:20e:cff:fec6::1]:

   # mount -t nfs '[2001:470:8:c53:20e:cff:fec6::1]:/export' /mnt/foo
   

   

   Note
   If putting the IPv6 address in brackets does not work, try without brackets.
2. Next, update /etc/fstab and specify an IPv6 NFS server and mount point. An example is included below for reference:

   [2001:470:8:c53:20e:cff::1]:/export /mnt nfs  defaults  0 0
   

3. Using the example above, attempt to mount the IPv6 NFS mount point with the mount command.

   # mount /mnt
   

4. Repeat the previous step, but this time modify the file /etc/exports on the NFS server to restrict access by subnet. The following example shows restricting access by subnet for both IPv4 and IPv6 addresses.

   /home 192.168.10.0/24(rw,insecure) [2001:470:8:c53::/64](rw,insecure)
   

Expected Results

1. Mounting an IPv6-based NFS mount using the mount command must work
2. Mounting an IPv6-based NFS mount using the mount command and /etc/fstab must work
3. Mounting an IPv6-based NFS volume succeeds even when the server restricts access by subnet