Uh, you don”t need to edit client.conf. The client should auto­mat­i­cal­ly pick up print­ers adver­tised by the serv­er. All you need to do is add “Allow @LOCAL” to the “<Loca­tion />” sec­tion in cupsd.conf on the serv­er. The syn­tax is pret­ty much the same as for Apache; see the cupsd.conf ref­er­ence for details.