ypserv
The ypserv package contains the daemons ypserv, rpc.yppasswdd, rpc.ypxfrd and the programs yppush, ypxfr, makedbm, revnetgroup and ypinit.
Version 4.x is a port of ypserv 2.x to use TI-RPC and to enable IPv6 support.
Source Repository: https://github.com/thkukuk/ypserv