re #11201 nss: need local netgroup implementation

*** 13,30 ****
         A netgroup defines a network-wide group of hosts and users. Use a
         netgroup to restrict access to shared NFS filesystems and to restrict
         remote login and shell access.
  
  
!        Network groups are stored in a network information service, such as
!        LDAP or NIS, not in a local file.
  
  
         This manual page describes the format for a file that is used to supply
!        input to a program such as ldapaddent(1M) for LDAP or makedbm(1M) for
!        NIS. These programs build maps or tables used by their corresponding
!        network information services.
  
  
         Each line of the file defines the name and membership of a network
         group. The line should have the format:
  
--- 13,31 ----
         A netgroup defines a network-wide group of hosts and users. Use a
         netgroup to restrict access to shared NFS filesystems and to restrict
         remote login and shell access.
  
  
!        Network groups are usually stored in network information services, such
!        as LDAP, or NIS, but may alternatively be stored in the local
!        /etc/netgroup file.  The netgroup line of the nsswitch.conf(4) file
!        determines which of those sources are used.
  
  
         This manual page describes the format for a file that is used to supply
!        input to a program such as ldapaddent(1M) for LDAP, or makedbm(1M) for
!        NIS.  The same file format is used in the local /etc/netgroup file.
  
  
         Each line of the file defines the name and membership of a network
         group. The line should have the format:
  
*** 103,128 ****
         /etc/netgroup
                          Used by a network information service's utility to
                          construct a map or table that contains netgroup
                          information. For example, ldapaddent(1M) uses
                          /etc/netgroup to construct an LDAP container.
  
  
  
-        Note that the netgroup information must always be stored in a network
-        information service, such as LDAP or NIS. The local file is only used
-        to construct a map or table for the network information service. It is
-        never consulted directly.
- 
  SEE ALSO
         ldapaddent(1M), makedbm(1M), share_nfs(1M), innetgr(3C), hosts(4),
         hosts.equiv(4), nsswitch.conf(4), passwd(4), shadow(4)
  
  NOTES
-        netgroup requires a network information service such as LDAP or NIS.
- 
- 
         Applications may make general membership tests using the innetgr()
         function. See innetgr(3C).
  
  
         Because the "-" character will not match any specific username or
--- 104,124 ----
         /etc/netgroup
                          Used by a network information service's utility to
                          construct a map or table that contains netgroup
                          information. For example, ldapaddent(1M) uses
                          /etc/netgroup to construct an LDAP container.
+                         Alternatively, the /etc/netgroup file may be used
+                         directly if the files source is specified in
+                         nsswitch.conf(4) for the netgroup database.
  
  
  
  SEE ALSO
         ldapaddent(1M), makedbm(1M), share_nfs(1M), innetgr(3C), hosts(4),
         hosts.equiv(4), nsswitch.conf(4), passwd(4), shadow(4)
  
  NOTES
         Applications may make general membership tests using the innetgr()
         function. See innetgr(3C).
  
  
         Because the "-" character will not match any specific username or