:local rtable [/ip firewall mangle get [/ip firewall mangle find src-address=$"remote-address"] new-routing-mark]
:local num [:pick $rtable begin=1 end=[:len ($rtable)]]

:local count [:len [/ip firewall mangle find new-routing-mark="r$num"]] 

/ip firewall mangle remove [/ip firewall mangle find src-address=$"remote-address"]

:if ($count < 2) do={
    :local localips [/ip address get [/ip address find interface="l2tp-out$num"] address ]
    :local localip [:pick $"localips" begin=0 end=([:find $"localips" "/"])]
    /tool fetch url="http://192.168.250.250:18702/server/ros/down/ip/$localip" mode=http
    /file remove "$localip"
}