View source for Sending your self an e-mail with DSL interface IP address

== The goal ==
The goal is to know yout DSL interface IP address at all time if you need to connect to your MT box for any reason. It is a simple script. (Based on [[Dynamic DNS Update Script for ChangeIP.com]])

== The script ==
Create a new script with the following source
<pre>
:global ddnsip
:global ddnslastip
:if ([ :typeof $ddnslastip ] = nil ) do={ :global ddnslastip "0" }
:global ddnsinterface
:global ddnssystem ("Version-" . [/system package get system version] )
:local int
:foreach int in=[/ip route find dst-address=0.0.0.0/0 active=yes ] do={
  :if ([:typeof [/ip route get $int routing-mark ]] != str ) do={
     :global ddnsinterface [/ip route get $int interface]
  }
}
:global ddnsip [ /ip address get [/ip address find interface=$ddnsinterface ] address ]
:if ([ :typeof $ddnsip ] = nil ) do={
   :log info ("DDNS: No ip address present on " . $ddnsinterface . ", please check.")
} else={
  :if ($ddnsip != $ddnslastip) do={
    :global strDate [/system clock get date]
    :global strTime [/system clock get time]
    :global strSystemName [/system identity get name]
    /tool e-mail send from=from@email_here_com to=to@email_here_com subject="DSL IP $strDate $strTime $strSystemName" body="DSL IP $ddnsip" server=mail_server_ip_address
    :log info "DDNS: Sending UPDATE!"
    :global ddnslastip "$ddnsip"
  } else={
  }
}
</pre>

== The schedule ==
Create a schedule that runs the script every ten or so minutes and save.
<pre>
add comment="" disabled=no interval=10m name=schedule1 on-event="your_script_name_here" start-date=may/15/2008 start-time=09:00:00
</pre>

Since it is a simple script, you can schedule it to run every minute.

== Shorter version ==
With no interface lookup.
<pre>
:global ddnsip
:global ddnslastip
:global str_date [/system clock get date]
:global str_time [/system clock get time] 
:global str_system_name [/system identity get name]
:if ([ :typeof $ddnslastip ] = nil ) do={ :global ddnslastip "0" }
:global ddnssystem ("Version-" . [/system package get system version] )
:global ddnsip [ /ip address get [/ip address find interface=ADSL ] address ]
:if ([ :typeof $ddnsip ] = nil ) do={
   :log info ("DDNS: No ip address present on  ADSL interface, please check.")
} else={
  :if ($ddnsip != $ddnslastip) do={
    /tool e-mail send from=from@email_here_com to=to@email_here_com subject="DSL IP $str_date $str_time $str_system_name" body="DSL IP $ddnsip" server=mail_server_ip_address
    :log info "DDNS: Sending UPDATE!"
    :global ddnslastip "$ddnsip"
  } else={ 
#    :log info "DDNS: No update required."
    }
}
</pre>
For this to work, simple rename your interface to ADSL and create a schedule as for the first script.