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+# Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+# See the COPYRIGHT file distributed with this work for additional
+# information regarding copyright ownership.
+
+#
+# Sample lookup procedure for tcldb
+#
+# This lookup procedure defines zones with identical SOA, NS, and MX
+# records at the apex and a single A record that varies from zone to
+# zone at the name "www".
+#
+# Something like this could be used by a web hosting company to serve
+# a number of domains without needing to create a separate master file
+# for each domain. Instead, all per-zone data (in this case, a single
+# IP address) specified in the named.conf file like this:
+#
+# zone "a.com." { type master; database "tcl 10.0.0.42"; };
+# zone "b.com." { type master; database "tcl 10.0.0.99"; };
+#
+# Since the tcldb driver doesn't support zone transfers, there should
+# be at least two identically configured master servers. In the
+# example below, they are assumed to be called ns1.isp.nil and
+# ns2.isp.nil.
+#
+
+proc lookup {zone name} {
+ global dbargs
+ switch -- $name {
+ @ { return [list \
+ {SOA 86400 "ns1.isp.nil. hostmaster.isp.nil. \
+ 1 3600 1800 1814400 3600"} \
+ {NS 86400 "ns1.isp.nil."} \
+ {NS 86400 "ns2.isp.nil."} \
+ {MX 86400 "10 mail.isp.nil."} ] }
+ www { return [list [list A 3600 $dbargs($zone)] ] }
+ }
+ return NXDOMAIN
+}