6in4 update Dyn IP with api for mikrotik

6in4.rsc

# MikroTik Script: 6in4.rsc
# Purpose: Update PPPoe IP dynamically

:local apiKey "api_key"
:local tunnelId "tunnel_id"

:local fileName "last_pppoe_ip2.txt"
:local lastIP
:local currentIP

:if ([/file find name=$fileName] = "") do={
    /file print file=$fileName
    :log info "File $fileName created."
}

:if ([/file find name=$fileName] != "") do={
    :set lastIP [/file get [/file find name=$fileName] contents]
}

# command to get ip from pppoe interface
:set currentIP [/ip address get [find interface="pppoe-out1"] address]

:if ($currentIP != $lastIP) do={
    :local url "https://6in4.ru/tunnel/$apiKey/$tunnelId"
    :local jsonIP [:pick $currentIP 0 [:find $currentIP "/"]]

    /tool fetch url=$url http-method=put http-header-field="Content-Type: application/json,accept: */*,accept-encoding:*" http-data="{\"ipv4remote\":\"$jsonIP\"}" dst-path=/dev/null keep-result=no

    /interface 6to4 set sit1 local-address=$jsonIP

    :file set [/file find name=$fileName] contents=$currentIP
    :log info "6in4 updated to $currentIP."
} else={
    :log info "No changes in IP address. Update not required."
}