# Dial PPPoE until a Certain IP Range is Obtained - Mikrotik Script RouterOS

    Dial PPPoE until a Certain IP Range is Obtained
    This script is for those who wants a certain IP range when connecting with PPPoE to your ISP. Instead of constantly disabling and enabling the pppoe client, all you have to do is run this script.

    You may want a certain IP range for any number of reasons. Sometimes I use this to check the routes that my ISP uses. The routes they use differs for certain IP ranges. Hope someone finds this useful.
    Forum thread for discussion
    3 variables to set, if, targetip and pppoedelay. if: name of your pppoe-client interface targetip: eg: 177.0.0.0/8 or 65.50.0.0/16 pppoedelay: Enough delay so that your ISP gives a new IP instead of the previous one. You can play around with this.

    :global if "pppoe-out1"
    :global targetip 210.0.0.0/8
    :global currentip [/ip address get [/ip address find interface=$if ] address]
    :global ip $currentip
    :global pppoedelay 10s

    :put "Current IP: $currentip\rTarget: $targetip\r"

    :while (!($currentip in $targetip)) do={
         put "$currentip is not in $targetip. Getting new IP. $pppoedelay delay"
         /interface disable $if
         :delay $pppoedelay
         /interface enable $if
         :do {delay 1s; put "waiting for pppoe-server"} while=( [/interface get unifi running]=false)
         :set currentip [/ip address get [/ip address find interface=$if ] address]
         :set currentip ([[:parse ":return $currentip"]])
         :set ip $currentip
         }
    :put "Target obtained: $currentip"

    Best to run from the CLI so you can see the output. Example:

    [admin@RB2011UAS] /system script> run pppoe-ip-cidr
    Current IP: 175.144.175.247/32
    Target: 210.0.0.0/8

    175.144.175.247/32 is not in 210.0.0.0/8. Getting new IP. 00:00:10 delay
    waiting for pppoe-server
    waiting for pppoe-server
    175.144.175.247/32 is not in 210.0.0.0/8. Getting new IP. 00:00:10 delay
    waiting for pppoe-server
    waiting for pppoe-server
    175.136.3.130/32 is not in 210.0.0.0/8. Getting new IP. 00:00:10 delay
    waiting for pppoe-server
    waiting for pppoe-server
    175.136.3.130/32 is not in 210.0.0.0/8. Getting new IP. 00:00:10 delay
    waiting for pppoe-server
    waiting for pppoe-server
    118.101.248.194/32 is not in 210.0.0.0/8. Getting new IP. 00:00:10 delay
    waiting for pppoe-server
    waiting for pppoe-server
    175.144.175.247/32 is not in 210.0.0.0/8. Getting new IP. 00:00:10 delay
    waiting for pppoe-server
    waiting for pppoe-server
    118.100.151.60/32 is not in 210.0.0.0/8. Getting new IP. 00:00:10 delay
    waiting for pppoe-server
    waiting for pppoe-server
    Target obtained: 210.187.203.102/32
    [admin@RB2011UAS] /system script>

    Credit: https://wiki.mikrotik.com/wiki/Dial_PPPoE_until_a_Certain_IP_Range_is_Obtained