                          Table of contents

     * Updating from 1.0 to 1.2
     * Updating from 1.2.03 to a later 1.2 release
     * Updating from 1.2.12 to a 1.3 release
     * Updating from 1.3 to a 1.4 release

   This document is divided in to two parts; anyone upgrading from
   a 1.0 release to a recent 1.2 release will need to look over
   both sections of this document.

                       Updating from 1.0 to 1.2

   MaraDNS 1.2 has a number of advantages over 1.0, including Y2038
   compliance, full support for DNS over TCP, and a new zone file
   format. While including a number of new features, MaraDNS 1.2 is
   almost completely compatible with all MaraDNS 1.0 data files. An
   update from 1.0 to 1.2 will, with very few exceptions, not need
   any data files to be changed. All MaraDNS 1.0 zone files will
   work with MaraDNS 1.2, and almost all 1.0 mararc configuration
   files will work with MaraDNS 1.2.

   To update a MaraDNS install from 1.0 to 1.2, download the
   MaraDNS 1.2 tarball, and type in the following command:

         ./configure ; make

   This is followed by:

         make install

   No configuration files will be overwritten by the installation
   of the new MaraDNS 1.2 binaries (making backups of all data
   files, naturally, is always a good idea).

   ----------------------------------------------------------------

   The only time a 1.0 mararc file will not work is when there is a
   misspelled mararc variable in the mararc file. For example, let
   us suppose we have a mararc file that looks like this:

 bind_address = "127.0.0.1"
 chroot_dir = "/etc/maradns"
 maradns_uid = 99
 maxprocs = 96
 default_rrany_set = 3
 verbose_levul = 1

   This will run fine in MaraDNS 1.0. However, when we try to run
   this file in MaraDNS 1.2, we will get this error message:

 FATAL ERROR: Unknown mararc variable verbose_levul
 Please look for the uncommented string "verbose_levul"
 in your mararc file and remove this line.

 The line this error is on looks like this:
 verbose_levul = 1

   This misspelled mararc variable needs to either be completely
   removed from the mararc file, or disabled by commenting out. The
   following mararc snippet will work identically in MaraDNS 1.0 as
   the above snippet, and will parse in MaraDNS 1.2 without a fatal
   error:

 bind_address = "127.0.0.1"
 chroot_dir = "/etc/maradns"
 maradns_uid = 99
 maxprocs = 96
 default_rrany_set = 3
 # Comment out the misspelled mararc variable
 #verbose_levul = 1

   ----------------------------------------------------------------

   Since MaraDNS 1.2 is usually started with the new duende
   daemonizing program, timestamps are, by default, no longer shown
   (since otherwise the system logs would have a redundant
   timestamp in them). If the older behavior of showing a UNIX time
   stamp is desired, add the following to a MaraDNS 1.2 mararc
   file:

 timestamp_type = 0

             Updating from 1.2.03 to a later 1.2 release

   There are a few minor changes between the 1.2.03 branch and
   later 1.2 releases of MaraDNS:

  The special remote queries have been changed

   The special remote queries, which can obtain information about
   MaraDNS' internal state, have been changed:

     * The admin_acl variable needs to be set for these variables
       to work. E.g. admin_acl = "127.0.0.1, 192.168.116.0/24",
       which only allows 127.0.0.1 (the same machine) or any
       machine with an IP that starts with 192.168.116 to access
       this information.
     * The TXT query erre-con-erre-cigarro.maradns.org is now done
       with version.maradns
     * The TXT query numthreads (this and all other special queries
       except version.maradns are only enabled when debug_msg_level
       is set) is now numthreads.maradns
     * The TXT query cache-elements is now cache-elements.maradns
     * The TXT query memusage is now memusage.maradns
     * The TXT query timestamp is now timestamp.maradns
     * The TXT query number.verbose_level.maradns has been added,
       but is only enabled if the remote_admin mararc variable is
       set.

   Further information about these queries can be obtained by
   looking at the mararc man page; in particular, look for
   admin_acl, debug_msg_level, and remote_admin.

  Zone names are now case-insensitive

   Zone names are now case-insensitive. In other words, a line like
   this in the mararc file:

 csv2["EXAMPLE.COM."] = "DB.EXAMPLE.COM"

   Is converted as if the line were:

 csv2["example.com."] = "DB.EXAMPLE.COM"

   This affects both csv1 and csv2 zone names. Since hostnames in
   both csv1 and csv2 host names are converted to lower-case, the
   impact of this change should be minimal.

  Dictionary variables now must be initialized before being used

   MaraDNS 1.2.07 now mandates that dictionary variables must be
   initialized before being used. This line, by itself, used to
   parse in a mararc file:

 upstream_servers["."] = "10.1.2.3"

   However, this line would do nothing unless the upstream_servers
   dictionary variable was first initialized, e.g:

 upstream_servers = {}
 upstream_servers["."] = "10.1.2.3"

   MaraDNS 1.2.07 now mandates the initialization line or exits
   with a fatal error when parsing a mararc file. The reason for
   this is to make debugging mararc files easier.

                Updating from 1.2.12 to a 1.3 release

  Updates to the csv2 parser

   In MaraDNS 1.3, some changes have been made to the csv2 parser.
   In particular:

     * The first record in a csv2 zone file can no longer be a TXT,
       WKS, or LOC record.
     * TXT (and SPF) records can no loner have tildes (the '~'
       character) in them.

   If these changes to the csv2 parser are not desired, it is
   possible to have MaraDNS 1.3's csv2 parser act like MaraDNS' 1.2
   csv2 parser by adding the following line to one's mararc file:

 csv2_tilde_handling = 0

   The above line is also accepted by MaraDNS 1.2 releases starting
   with 1.2.12.04; this allows MaraDNS 1.2 and 1.3 use the same
   configuration file.

   The reason for this change is because MaraDNS now can use tildes
   to separate records. A MaraDNS 1.2 csv2 zone file that looked
   like this:

 example.com. 10.1.2.4
 www.example.com. A 10.1.2.5
 example.com. MX mail.example.com.
 mail.example.com. 10.1.2.6
 example.com. TXT 'Hello, world!'

   Now can look like this:

 example.com. 10.1.2.4 ~
 www.example.com. A 10.1.2.5 ~
 example.com. MX mail.example.com. ~
 mail.example.com. 10.1.2.6 ~
 example.com. TXT 'Hello, world!'

   The way MaraDNS figures out whether to use tilde to separate
   records is by looking between the first and second record to see
   if a tilde is present. If so, MaraDNS requires tildes to be
   between all records. If not, MaraDNS' csv2 parsing is almost
   completely 1.2 compatible, the only difference being that tildes
   can not be in TXT records.

   Note that, if tildes are used to separate records, the following
   restrictions are added to TXT records:

     * The pipe (|) character is not allowed in TXT records. Use
       the '\x7c' escape sequence instead. For example, change a
       TXT record that looks like 'ls | more' to become 'ls '\x7c'
       more'
     * The pipe (#) character is not allowed in TXT records. Use
       the '\x23' escape sequence instead. For example, change a
       TXT record that looks like 'press the # key' to become
       'press the '\x23' key'
     * Control characters, including the newline character, are not
       allowed. The escape sequence used depends on the desired
       control character. For example, use \x0a for a UNIX
       linefeed.

   Another MaraDNS 1.3 change only affects the unusual case when
   one has delegation NS records. Let us suppose we have a zone
   file with the following records:

 example.com. A 10.1.2.3 ~
 www.example.com. A 10.1.2.4 ~
 joe.example.com. NS ns.joe.example.com. ~
 ns.joe.example.com. A 10.1.2.5

   In MaraDNS 1.2, if we send a recursive request for
   www.joe.example.com, MaraDNS will convert the request in to a
   recursive request. In MaraDNS 1.3, we will get the following
   answer:

 joe.example.com. NS ns.joe.example.com. ~
 ns.joe.example.com. A 10.1.2.5

   If the old MaraDNS 1.2 behavior is desired, such as for someone
   who is using the same nameserver to both give out delegation
   records and to recursively resolve records, add the following
   line to one's mararc file:

 recurse_delegation = 1

  bind_star_handling

   bind_star_handling is a variable that determines whether MaraDNS
   should be strictly RFC compliant with regard to star records. In
   MaraDNS 1.2, the default value for this was 0. In MaraDNS 1.3,
   the default value is 1. If, for some reason, the older non-RFC
   compliant behavior is desired, add this line to your mararc
   file:

 bind_star_handling = 0

  max_mem

   max_mem determined the maximum amount of memory MaraDNS is
   allowed to allocate. This is a numeric variable, and the value
   is in kilobytes. The default value of this is to allocate 1
   megabyte for MaraDNS' general use, and in addition, to allocate
   1536 bytes for each element we can have in the cache or DNS
   record that we are authoritatively serving.

   If, for whatever reason, you wish to disable this feature, add
   the following lint to your mararc file:

 max_mem = 0

                  Updating from 1.3 to a 1.4 release

   MaraDNS 1.4 has a few features added compared to the MaraDNS 1.3
   branch:

     * NAPTR support
     * askmara, askmara-tcp and fetchzone now can have IPv6 support
     * Bugfix: The RA bit is set if recursion is enabled; otherwise
       it is not set.
     * stdint.h (instead of the old BSD-specific types.h) is now
       used for fixed-sized integers.
     * New parameter: notthere_ip
     * Zoneserver now supports dns_port parameter
     * It is no longer possible to have the * character in zone
       names
     * Documentation updates
     * Other bug fixes

   MaraDNS 1.4 is compatible with MaraDNS 1.3 unless one has a * in
   a zone name. Sometimes, people get confused and think this is
   how to have MaraDNS support wildcard records:

 csv2["*.example.com."] = "db.example.star"

   However, this does not work. The correct way to support star
   records is to have the star in the zone file, not the mararc
   file, like this:

 *.example.com.  A       10.2.3.4

   Have csv2["*.example.com."] will result in a zone file for the
   domain name "*.example.com." (with a literal star in the domain
   name), which is usually not what one wants.
