Mikrotik DynDNS Script

This is DynDns Script for mikrotik to access mikrotik server for remote places or anywhere in the world.Do remember,this script is for Mikrotik ver 3.x and will not work for later versions.we will update a new script for later versions.Don’t forget the change Username,password and domain name.See highlighted text.
# Define User Variables
:global ddnsuser "USERNAME"
:global ddnspass "PASS"
:global ddnshost "DOMAIN NAME"
# Define Global Variables
:global ddnsip
:global ddnslastip
:if ([ :typeof $ddnslastip ] = nil ) do={ :global ddnslastip "0" }
:global ddnsinterface
:global ddnssystem ("mt-" . [/system package get system version] )
# Define Local Variables
:local int
# Loop thru interfaces and look for ones containing
# default gateways without routing-marks
: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 $int interface] }
}
# Grab the current IP address on that interface.
:global ddnsip [ /ip address get [/ip address find interface=$ddnsinterface ] address ]
# Did we get an IP address to compare?
:if ([ :typeof $ddnsip ] = nil ) do={
:log info ("DDNS: No ip address present on " . $ddnsinterface . ", please check.")
} else={
:if ($ddnsip != $ddnslastip) do={
:log info "DDNS: Sending UPDATE!"
:log info [ :put [/tool dns-update name=$ddnshost address=[:pick $ddnsip 0 [:find $ddnsip "/"] ] key-name=$ddnsuser key=$ddnspass ] ] :global ddnslastip $ddnsip
} else={
:log info "DDNS: No update required."
}
}
# End of script
Mikrotik DynDNS Script