inadyn-mt(8)               System management commands               inadyn-mt(8)

       inadyn-mt - a client for open DNS servers.

       inadyn-mt [-h | --help] [-u | --username username] [-p | -- password
       password] [-a | --alias alias[, hash] [dual | coupled | ip4 | ip6 | auto]
       [if] [pub | policy | home | careof | crypto | nocrypto | tmp | pubtmp]
       [ip server[:port] <ip server url> [ip server host]] [--input_file
       path/name] [--ip_server_name server[:port] url] [--ip_server_host
       hostname] [--dyndns_server_name server[:port]] [--dyndns_server_url url]
       [--dyndns_system service] [--proxy_server[:port] proxy[:port]]
       [--update_period ms] [--update_period_sec sec] [--forced_update_period
       sec] [--log_file path/name] [--background] [--verbose level]
       [--iterations iterations] [--syslog] [--change_persona uid[:gid]]

       inadyn-mt is a client for `open' name servers. That is, it allows the
       user's machine to have an internet recognized name by transferring some
       control over a name server not managed by the user. Some of the services
       that are offered by those open name servers are free of charge, and work
       even when the client machine does not have a static IP.  Supports both
       IPv4, and IPv6 addresses.

       Supported name servers are: (requires SSL bridge, like stunnel)

       Its basic operation is to periodically check whether the actual IP of the
       client machine is the same one that is recorded in the name server, and
       update the name server records when there is a mismatch.

       For IPv6 addresses, see below, alias, and ip_server_name options.

       Also, network status can be checked at a user specified interval, and
       audible alerts issued in event of network status down.

       -h, --help
              Print a summary of the options to inadyn-mt and exit.

       -u, --username username
              The username, if applicable. This might be referred to as hash.

       -p, --password password
              The password, if applicable.

       -a, --alias alias[, hash] [ip type] [if] [addr pref] [ip server[:port]
       <ip server url> [ip server host]]
              A host name alias, optional comma delimited hash, and optional ip
              version (default auto), network interface, address preference, ip
              server (and optional colon delimited port) and url, ip server
              host. This option can appear multiple times.

              IP types are dual, coupled, ip4, ip6, or auto.  IP type auto is
              the default.  IP type dual (for dual ip stack), denotes the alias
              should be updated to both ipv6, ipv4.  Coupled is like dual, but
              denotes DDNS server accepts dual stack updates in a single
              request, where the ipv4, ipv6 addresses are presented as a comma
              delimited list.

              Network interface parameter should denote the network interface to
              be used as the ip server connect source address.  When this
              parameter is opted, unless ip type is ip4, the alias will be
              updated to the ipv6 address obtained from this interface, along
              with, if indicated, the ipv4 address obtained from ip server.

              The addr pref parameter denotes ipv6 privacy extentions address
              preference.  It can be one of either pub, policy, home, careof,
              crypto, nocrypto, tmp, pubtmp.  Logical OR not yet supported.  The
              default is pub.

              Use the ip server parameter for other than the DDNS server's ip
              server as per default inadyn-mt hard coded configuration settings.
              It can include a colon delimted port number.  It must be
              accompanied by a url parameter.  Finally, an ip server host can be
              designated - useful in case of ip server running on multiple
              server hosts, or the ip server domain name used to reach the
              server otherwise differs from actual ip server domain name.

              Except the host (alias) parameter, all of these parameters are
              optional, but order matters.

       --input_file file
              The file name that contains inadyn-mt command options exactly as
              specified in the command line syntax (adds to those already
              present in the cmd line). The default configuration file name is
              '/etc/inadyn-mt.conf'. It is looked at automatically if inadyn-mt
              is called without any command line options. The format is as
              expected for a **NIX config   the hash character is used to
              comment entire lines. Spaces are ingored. The long options may be
              specified without -- if placed at the beginning of the line.

       --ip_server_name server[:port] url
              The client IP is detected by calling 'url' from this

              Choice of ip server name parameter option can determine what type
              of address is updated.  To update an IPv6 address, simply choose
              an ip server that supports IPv6, such as, /, /,
     /, among others.  And, of course, dynamic dns server
              should be set to one that supports IPv6.

       --ip_server_host hostname
              Host name used in http request to ip server if different from ip
              server name, as when, e.g., ip_server_name is 'localhost:port /'
              through an SSL bridge. Defaults to ip server name.

       --dyndns_server_name server[:port]
              The server that receives the update DNS requests. When no proxy is
              specified it is sufficient to set the dyndns_system so that the
              default servers will be taken. The option is useful for generic
              DynDNS services that support HTTP update.

       --dyndns_server_url url
              The update path inside the DynDNS server.

       --dyndns_server_host hostname
              Host name used in http update DNS request, if different from
              dyndns server name, as when, e.g., ip_server_name is
              'localhost:port' through an SLL bridge.  Defaults to dyndns server

       --dyndns_system system
              An optional DDNS service ( is the default). For


              the acceptable services are one of or
    , or

              There is only one acceptable service for
    , which is

              This option can be used multiple times - once for each DDNS server
              to update - followed by --alias, and other options corresponding
              to the --dyndns_system entry. Per --dyndns_system entry options
              are username, password, alias, ip_server_name, ip_server_host,
              dyndns_server_name, dyndns_server_url, dyndns_server_host, and

              Other services are:
                     Requires SSL bridge, like stunnel; set --server_host_name
                     See also custom server options, --svr_rsp_success,
                     --svr_rsp_other, --svr_ip_param,  --svr_ip_in_rsp
              The default service is

       --proxy_server proxy[:port]
              An http proxy server name and port. The default is none.

       --update_period milliseconds
              How often the IP is checked. This value denotes millisecond (There
              are 1000 milliseconds in one second). 30000..864000000.  Default
              is about 10 min.  maximum is 10 days.

       --update_period_sec seconds
              How often the IP is checked. Here the value denotes seconds.
              30..864000.  The default is about 10 min.  The maximum value is 10

       --forced_update_period seconds
              How often the IP should be updated even if it is not changed. The
              time should be given in seconds.  30 sec..30 days.  Default, 30

       --forced_update_adjust control
              Fine timer control.  Slow, or speed timer between -4..5.  Default,

       --log_file file
              The name, including the full path, of a log file.

       --cache_dir dir
              Directory to which ip, and time update files are written.
              Defaults to /tmp on **NIX systems.

              run in background. Output is sent to the UNIX syslog facilities or
              to a log file, if one was specified.

       --verbose level
              Set the debug level, which is an integer between 0 to 5.

       --iterations number
              Set the number of DNS updates. The default is 0, which means

              Explicitly sending the output to a syslog like file, such as

       --change_persona uid[:gid]
              After init changes user ID and group ID to the provided ones. This
              allows dropping unneeded [root] privileges after startup.

       --retries number
              Network comm retry attempts.  0 to 100, default 0.

       --retry_interval milliseconds
              Network comm miliseconds retry interval, 0 to 30,000, default

              Retry ip update even after network comm retries exhausted,
              default on.

       --retry_pending_interval seconds
              Network comm seconds update retry interval, after retries
              exhausted.  5 to 3600, default 300.

       --lang_file file
              Language file path, and file name, defaults to either ../inadyn-
              mt/lang/en.lng, or etc/inadyn-mt/en.lng.  No parameter option
              gives hard coded defaults.

       --online_check_url srv_name[:port] url
              srv_name[:port] url - URL to reach to confirm online status.

       --status_interval seconds
              Seconds [30..864000] interval at which to check online status,
              defaults to 600.

       --alert_retries number
              Network retries before audible network status alerts. [0..100],
              default 0.

       --status_offline_interval seconds
              Seconds [0..864000] interval at which to check online status,
              after offline detected, defaults to 15.

              Audible network status alerts toggle (log output only), default

       --wave_file file
              Audible network status alerts wave file path, and file name.
              defaults to either ../inadyn-mt/extra/wav/alarm.wav, or
              etc/inadyn-mt/extra/wav/alarm.wav.  [wave loops: 0..100; -1 for
              infinite] same as wave_loops below -- optional number of times per
              wave play call to repeat wave file play, default 0.

       --wave_loops number
              Same as wave_file parameter optional parameter -- 0..100; -1 for
              infinite number of times per wave play call to play wave file.

       --wave_buff number
              Wave file output buffer size control -- integer or float multiple
              of wave file bytes per sec. [.25..10], default .25.

       --wave_gain number
              Gain (amplitude adjust) at which to play audible alert (beware
              clipping), integer or float. [-10..10], default 10 (0db, no

       --alert_interval milliseconds
              Time in miliseconds between consecutive audible network status
              alerts, [0..3600000], default 0.

       --svr_rsp_success string
              Optional for custom DDNS updates.  A quoted comma delimited
              string, e.g., "good, nochg", representing custom DDNS server
              successful update return values.

       --svr_rsp_other string
              Optional for custom DDNS updates.  A quoted comma delimited
              string, e.g., "dnserr,911", representing custom DDNS server non-
              fatal update failure return values.

       --svr_ip_param param [user] [pass]
              Optional for custom DDNS updates.  DDNS url parameter for ip
              address, e.g., myip.

              Optional for custom DDNS updates. Flag that custom DDNS server
              returns your ip address on update success.  Defaults to false.

              Flag that server defaults to dual list (coupled) alias ip type.
              Defaults to false.

              Flag server auto detects ip.  Defaults to false.

       --svr_add_cfg file
              Additional servers file. Default search for servers_additional.cfg
              in ./extra, /etc, /etc/inadyn-mt, /etc/inadyn-mt/extra.  Contains
              additional preconfigured DDNS servers to be used as
              --dyndns_system option parameter in same fashion as servers
              inadyn-mt supports natively.  Should appear before any
              dyndns_system, option in inadyn-mt.conf or command line if not
              using inadyn-mt.conf.

       --if interface
              Name of network interface to use for ip server, and DDNS server
              comm.  Defaults to system configured default.

       --addr_pref preference
              ipv6 privacy extensions address preference.  Valid parameters are
              'pub,' 'policy,' 'home,' 'careof,' 'crypto,' 'nocrypto,' 'tmp,'
              'pubtmp.'  Defaults to 'pub.'  See rfc5014.  Combining via logical
              OR not presently supported.

              Enumerate network interfaces.

       inadyn-mt -u username -p password -a

       inadyn-mt --username test --password test --update_period 60000 --alias --alias my.second.domain

       inadyn-mt --background -u test -p test --update_period 60000 --alias --alias my.second.domain --log_file inadyn-mt.log
       inadyn-mt --dyndns_system -a,hash_from_freedns

       inadyn-mt --update_period 60000 --alias,hash_for_host1 -a
       my.second.domain,hash2 --dyndns_system

       This provider prefers to get as parameter a single hashed (base64
       encoded) value.

       As of inadyn-mt version 02.24.07-afraid_00_patch, aliases hashes can be
       automatically obtained via sha1 hashed ┬┤username|password┬┤.  To this end,
       use options username, and password.

       Otherwise, the DDNS web user interface provides a
       "Direct URL" link via which corresponding alias hash may be copied, and
       pasted into inadyn-mt config as alias option hash paramter.

       Example: Resulting address window url looks like this:

       The user has to copy and paste the hash value after the '?' until the end
       of line.

       The hash will be used as additional param in --alias option. (see typical
       usage above)

       inadyn-mt prints a message when the IP is updated.  When the connection
       goes down it could be that inadyn-mt will print some error messages.
       Those are harmless and should be followed by 'OK' messages after the
       connection is back up.

       Any of the SIG_HUP, SIG_INT, SIG_QUIT will cause inadyn-mt to terminate
       gracefully.  SIG_USR1 will cause inadyn-mt to update ip, if changed.

   Other manual pages
       The syntax of the optional configuration file is given by inadyn-

   Internet resources



       inadyn was written by Narcis Ilisei, <>; inadyn-
       advanced, Steve Horbachuk; inadyn-mt unicode, other augmentations, Bryan
       Hoover <>

       This manual page was written by Shaul Karl, <>, for the
       Debian GNU/Linux system, based on the readme.html file that is found in
       the source.

Linux applications               September, 2009                    inadyn-mt(8)