# Definiujemy zmienne globalne
:global ddnsuser "............."
:global ddnspass "................."
:global ddnshost "............................"

# Definiujemy zmienne globalne
:global ddnsip
:global ddnslastip
:if ([ :typeof $ddnslastip ] = nil ) do={ :global ddnslastip "0" }

:global ddnsinterface
:global ddnssystem ("mt-" . [/system package get system version] )

# Definiujemy zmienne lokalne
: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]
  }
}
:log info $ddnsinterface

# Definiujemy zmienną globalną (aktualny adres IP na danym interfejsie)
: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 ("DynDNS: No ip address present on " . $ddnsinterface . ", please check.")
} else={
  :if ($ddnsip != $ddnslastip) do={
    :log info "DynDNS: Sending UPDATE!"
/tool fetch address=members.dyndns.org src-path="/nic/update?system=dyndns&hostname=$ddnshost&myip=$ddnsip&wildcard=no"
user=$ddnsuser password=$ddnspass dst-path=("/DynDNS.".$ddnshost)
  :delay 1
  :local str [/file find name="DynDNS.$ddnshost"];
  /file remove $str
  :global ddnslastip $ddnsip
  }
}

/system scheduler
add comment="" disabled=no interval=5m name=DDNS on-event=\
    HomingBeacon-Simple policy=read,write,policy,test,password start-time=\
    startup

/system scheduler add name=DDNS interval=00:01 on-event="/system script run DDNS\r\n"