Because it is a official package but in the open world repo there is a very old version Why is ping working on phd-mailscan on heustock? and not on rome? Because of schilt which routes between the Server 1 network and the 192.168.127.0/27 network. It seems that hirzli which is in the Workstation network doesn't route this. Isn't phd-systemxen:/var/yp/ypfiles/hosts made obsolete by dphys-config? Which servers without dphys-config use this? It is see documentation above What it takes to get users from an stock installation A House An House an horse a horse an hour a hour