Description of problem:
nss_ldap allows for nis content to be stored correctly in LDAP, however, a subtle yet important piece is missing.  nisdefaultdomain is left unset.  The only way to achieve this is to:
A. manually set defaultdomain domain.com at the cli <- doesn't survive reboot.
B. configure the client as if it was a nis / yp client complete with yp.conf file expecting a <nis> server to be available.

/etc/sysconfig/network allows for the variable NISDOMAIN to be set, but the only init code that appears to call it is the ypbind piece.

Version-Release number of selected component (if applicable):


How reproducible / Steps to Reproduce:
/etc/ldap.conf:
nss_base_netgroup $DN-DATA

/etc/nsswitch.conf:
netgroup:   ldap

/etc/sysconfig/network:
NISDOMAIN=domain.com

getent netgroup <netgroup-name>

domainname or nisdomainname cli returns (none)
  
Actual results:
getent netgroup <netgroup-name>
 - returns proper nisnetgrouptriple

domainname or nisdomainname cli:
 -returns (none)

Expected results:
getent netgroup <netgroup-name>
 - returns proper nisnetgrouptriple

domainname or nisdomainname cli:
 -returns nisnetgroupname


Additional info:
If /etc/sysconfig/network contains the NISDOMAIN var, then the internal system should set that without having to be called specifically from the ypbind init script.