How to Enable an NIS+ Client to Use IPv6
Log in as superuser. Edit the /etc/nsswitch.conf file. Add the new ipnodes source and specify the naming
service (such as ldap). ipnodes: ldap [NOTFOUND=return] files
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ipnodes defaults to files. During
the transition from IPv4 to IPv6, where all naming services are not aware
of IPv6 addresses, you should accept the files default.
Otherwise, unnecessary delays might result during the resolution of addresses.
Save the file and reboot the machine. Because the nscd daemon caches this information,
which it reads at start up, you must reboot the machine now.
Ensuring Compatibility With +/- Syntax
If +/- is used in /etc/passwd, /etc/shadow, and /etc/group files, you will need to modify
the nsswitch.conffile to insure compatibility.
NIS+. To provide +/- semantics with NIS+,
change the passwd and groups sources
to compat and add a passwd_compat: nisplus
entry to the nsswitch.conf file after the passwd or group entry as shown below:
passwd: compat
passwd_compat: nisplus
group: compat
group_compat: nisplus
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The above specifies that client routines obtain their network information
from /etc files and NIS+ tables as indicated by the +/- entries in the files.
NIS. To provide the same syntax as in
the SunOS™ 4 release, change the passwd
and groups sources to compat.
passwd: compat
group: compat
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This specifies that /etc files and NIS maps as indicated by the +/-
entries in the files.
Note - Users working on a client machine being served by an NIS+ server
running in NIS compatibility mode cannot run ypcat on the
netgroup table. Doing so will give you results as if the table were empty
even if it has entries.
The Switch File and Password Information
 Caution - files should be the first source in the nsswitch.conf file for passwd information. If files is not the first source, network security could be weakened
and users could encounter log in difficulty.
For example, in an NIS+ environment, the passwd line
of the nsswitch.conf file should look like this:
In an NIS environment, the passwd line of the nsswitch.conf file should look like this:
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