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IPv6 Testing on NFS should be similar to IPv4 NFS. If you can resolve hostnames to IPv6 addresses, then you everything should just work. If you can't, then when specifying an 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:
{{QA/Test_Case
|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 <code>nfs(5)</code> manpage for details:
|setup=
# Prepare an NFS server that is accessible via IPv6 networking
# On the NFS server, setup a mount point in the file {{filename|/etc/exports}}
|actions=
<ol>
<li>First, attempt to mount an IPv6-based NFS mount using the {{command|mount}} command.  The example below demonstrates mounting a share called {{filename|/export}} hosted by the NFS server accessible by it's IPv6 address <code>[2001:470:8:c53:20e:cff:fec6::1]</code>:
<pre>
# mount -t nfs '[2001:470:8:c53:20e:cff:fec6::1]:/export' /mnt/foo
</pre>


* Here's an example /etc/fstab line that shows how to mount an NFS server over IPV6:
{{admon/tip|Note|If putting the IPv6 address in brackets does not work, try without brackets.}}


            [2001:470:8:c53:20e:cff::1]:/export /mnt nfs  defaults  0 0
<li>Next, update {{filename|/etc/fstab}} and specify an IPv6 NFS server and mount point.  An example is included below for reference:
 
<pre>
* An good example to try is to mount a nfs filesystem via an ipv6 address:
[2001:470:8:c53:20e:cff::1]:/export /mnt nfs  defaults  0 0
 
</pre>
            # mount -t nfs '[2001:470:8:c53:20e:cff:fec6::1]:/export' /mnt/foo
<li>Using the example above, attempt to mount the IPv6 NFS mount point with the {{command|mount}} command.
 
<pre>
* On the server side, if you're restricting access by subnet you'll also need to explicitly export to your ipv6 subnet as well. Here's an example line in /etc/exports that is exporting to both an IPv4 and IPv6 subnet.
# mount /mnt
 
</pre>
            /home 192.168.10.0/24(rw,insecure) [2001:470:8:c53::/64](rw,insecure)
<li> Repeat the previous step, but this time modify the file {{filename|/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.
<pre>
/home 192.168.10.0/24(rw,insecure) 2001:470:8:c53::/64(rw,insecure)
</pre>
</ol>
|results=
# Mounting an IPv6-based NFS mount using the {{command|mount}} command must work
# Mounting an IPv6-based NFS mount using the {{command|mount}} command and {{filename|/etc/fstab}} must work
# Mounting an IPv6-based NFS volume succeeds even when the server restricts access by subnet
}}

Latest revision as of 13:28, 21 June 2011

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
    Idea.png
    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



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