log info ("UpdateDynDNS: hostname = $hostname")

#log info ("UpdateDynDNS: hostname = $hostname")

:global currentIP;

:local tmpIP [/ip address get [find interface="WAN"] address];
:local myIP [:pick $tmpIP 0 [:find $tmpIP "/"]];

:if ($myIP != $currentIP) do={
    :log info "WAN IP address changed from $currentIP to $myIP"
    :foreach rule in=[/ip firewall nat find dst-address=$currentIP] do={
        /ip firewall nat set $rule dst-address=$myIP;
    }
    :set currentIP $myIP;
    /tool fetch url="http://url.to.server/page?args&stuff"
}

/file remove [/file find name~"update.php.*"]

:global currentIP [:resolve myip.opendns.com server=208.67.222.222];

# DNSoMatic automatic DNS updates
#--------------- Change Values in this section to match your setup ------------------
# User account info of DNSoMatic

:local maticuser youruser
:local maticpass yourpassword

# Set the hostname or label of network to be updated. This is the part after the double colon (::) on the DNSoMatic services page.
# Hostnames with spaces are unsupported. Replace the value in the quotations below with your host names.
# To specify multiple hosts, separate them with commas. 
# Use "all.dnsomatic.com" for the matichost to update all items in dnsomatic with this IP.

:local matichost all.dnsomatic.com

#------------------------------------------------------------------------------------
# No more changes need

#OLD - Removing msg at log... fetch file...
#:global previousIP;
# Get the current public IP using DNS-O-Matic service.
#/tool fetch url="http://myip.dnsomatic.com/" mode=http dst-path=mypublicip.txt
# Read the current public IP into the currentIP variable.
#:local currentIP [/file get mypublicip.txt contents]

#NEW
:global previousIP;
:global currentIP [:resolve myip.opendns.com server=208.67.222.222];

:if ($currentIP != $previousIP) do={
    :log info "DNSoMatic: Update needed"
    :set previousIP $currentIP
    
# The update URL. Note the "\3F" is hex for question mark (?). Required since ? is a special character in commands.
    :local url "http://updates.dnsomatic.com/nic/update\3Fmyip=$currentIP&wildcard=NOCHG&mx=NOCHG&backmx=NOCHG"
    :local matichostarray;
    :set matichostarray [:toarray $matichost];
    :foreach host in=$matichostarray do={
        :log info "DNSoMatic: Sending update for $host"
        /tool fetch url=($url . "&hostname=$host") user=$maticuser password=$maticpass mode=http dst-path=("dnsomaticupdate-" . $host . ".txt")
        :log info "DNSoMatic: Host $host updated on DNSoMatic with IP $currentIP"
    }
}  else={}