JSFiddle - React, Tailwind, and code Playground

HTML

<div id="content"></div>

JavaScript

//$("#content").html("");

for(var i = 1; i<100;i++)
{
    $("#content").append("int lo "+i+"<br />");
    $("#content").append("ipv add 2001:db8:01"+pad(i, 2)+"::1/128<br />");
    $("#content").append("ipv ospf 1 a 1<br />");
    $("#content").append("!<br />");
}

function pad(num, size) {
    var s = num+"";
    while (s.length < size) s = "0" + s;
    return s;
}