yp-tools
The yp-tools package contains the programs domainname, nisdomainname, ypcat, ypchfn, ypchsh, ypdomainname, ypmatch, yppoll, ypset, ypwhich and yppasswd. It supports IPv6 with help of TI-RPC and the standalone libnsl libraries.
Source Repository: https://github.com/thkukuk/yp-tools