60 lines
2.1 KiB
Plaintext
60 lines
2.1 KiB
Plaintext
Copyright (C) 2001, 2004, 2016 Internet Systems Consortium, Inc. ("ISC")
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This Source Code Form is subject to the terms of the Mozilla Public
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License, v. 2.0. If a copy of the MPL was not distributed with this
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file, You can obtain one at http://mozilla.org/MPL/2.0/.
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$Id: migration-4to9,v 1.4 2004/03/05 05:04:53 marka Exp $
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BIND 4 to BIND 9 Migration Notes
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To transition from BIND 4 to BIND 9 you first need to convert your
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configuration file to the new format. There is a conversion tool in
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contrib/named-bootconf that allows you to do this.
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named-bootconf.sh < /etc/named.boot > /etc/named.conf
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BIND 9 uses a system assigned port for the UDP queries it makes rather
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than port 53 that BIND 4 uses. This may conflict with some firewalls.
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The following directives in /etc/named.conf allows you to specify
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a port to use.
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query-source address * port 53;
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transfer-source * port 53;
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notify-source * port 53;
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BIND 9 no longer uses the minimum field to specify the TTL of records
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without a explicit TTL. Use the $TTL directive to specify a default TTL
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before the first record without a explicit TTL.
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$TTL 3600
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@ IN SOA ns1.example.com. hostmaster.example.com. (
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2001021100
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7200
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1200
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3600000
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7200 )
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BIND 9 does not support multiple CNAMEs with the same owner name.
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Illegal:
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www.example.com. CNAME host1.example.com.
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www.example.com. CNAME host2.example.com.
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BIND 9 does not support "CNAMEs with other data" with the same owner name,
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ignoring the DNSSEC records (SIG, NXT, KEY) that BIND 4 did not support.
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Illegal:
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www.example.com. CNAME host1.example.com.
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www.example.com. MX 10 host2.example.com.
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BIND 9 is less tolerant of errors in master files, so check your logs and
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fix any errors reported. The named-checkzone program can also be to check
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master files.
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Outgoing zone transfers now use the "many-answers" format by default.
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This format is not understood by certain old versions of BIND 4.
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You can work around this problem using the option "transfer-format
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one-answer;", but since these old versions all have known security
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problems, the correct fix is to upgrade the slave servers.
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