#!/bin/bash

# disable ipv6
isInFile=$(cat /etc/sysctl.conf | grep -c "net.ipv6.conf.all.disable_ipv6 = 1")
if [ $isInFile -eq 0 ]
    then
        echo "" >> /etc/sysctl.conf
        echo "net.ipv6.conf.all.disable_ipv6 = 1" >> /etc/sysctl.conf
        echo "net.ipv6.conf.default.disable_ipv6 = 1" >> /etc/sysctl.conf
    else
        echo "ipv6 already disabled"
fi