bind comes with a very helpful sample named.conf, so install it in

/usr/share/examples/named. I'm not overwhelmed about moving the file
into src/share/examples but there is prior art (amd).

etc/mtree/NetBSD.dist

@@ -1,4 +1,4 @@
-#	$NetBSD: NetBSD.dist,v 1.82 1999/04/03 09:36:04 fair Exp $
+#	$NetBSD: NetBSD.dist,v 1.83 1999/07/19 02:30:43 abs Exp $
 #	@(#)4.4BSD.dist	8.1 (Berkeley) 6/13/93
 
 /set type=dir uname=root gname=wheel mode=0755
@@ -809,6 +809,11 @@ ipf
 # ./usr/share/examples/ipf
 ..
 
+# ./usr/share/examples/named
+named
+# ./usr/share/examples/named
+..
+
 # ./usr/share/examples/supfiles
 supfiles
 # ./usr/share/examples/supfiles

share/examples/named/Makefile

@@ -0,0 +1,11 @@
+#	$NetBSD: Makefile,v 1.1 1999/07/19 02:30:43 abs Exp $
+
+.include <bsd.own.mk>
+
+.if ${MKSHARE} != "no"
+FILES=	named.conf
+FILESDIR=/usr/share/examples/named
+.endif
+MKOBJ=	no
+
+.include <bsd.prog.mk>

share/examples/named/named.conf

@@ -1,4 +1,4 @@
-/*	$NetBSD: named.conf,v 1.1.1.1 1998/10/05 18:01:59 tron Exp $	*/
+/*	$NetBSD: named.conf,v 1.1 1999/07/19 02:30:43 abs Exp $	*/
 
 /*
  * This is a worthless, nonrunnable example of a named.conf file that has