Checking for the NFS Version 4 Domain

Before assigning a value for your network's NFS Version 4 domain, check whether an NFS Version 4 domain has already been configured for your network. The following examples provide ways of identifying your network's NFS Version 4 domain.

To identify the NFS Version 4 domain from a DNS TXT RR, use either the nslookup or the dig command:

The following example shows sample output for the nslookup command:

# nslookup -q=txt _nfsv4idmapdomain
Server:         10.255.255.255
Address:        10.255.255.255#53

_nfsv4idmapdomain.company.example.com text = "example.com"

The following example shows sample output for the dig command:

# dig +domain=company.example.com -t TXT _nfsv4idmapdomain
...
;; QUESTION SECTION:
;_nfsv4idmapdomain.company.example.com. IN    TXT

;; ANSWER SECTION:
_nfsv4idmapdomain.company.example.com. 21600 IN TXT   "example.com"

;; AUTHORITY SECTION:
...

For information about setting up a DNS TXT RR, see nfsmapid and DNS TXT Records.

If your network is not set up with a NFS Version 4 DNS TXT RR, use the following command to identify your NFS Version 4 domain from the DNS domain name:
```
# egrep domain /etc/resolv.conf
domain company.example.com
```
If the /etc/resolv.conf file is not configured to provide a DNS domain name for the client, use the following command to identify the domain from the network's NFS Version 4 domain configuration:
```
# cat /system/volatile/nfs4_domain
example.com
```
If you are using a different naming service, such as NIS, use the following command to identify the domain for the naming service configured for your network:
```
# domainname
it.company.example.com
```

For more information, see the following man pages: