#!/bin/sh

if  [[ ${1} = "on" ]]; then 
 printf "\nAktiviere ipv6. $ sudo sysctl -w net.ipv6.conf...\n"
 sudo sysctl -w net.ipv6.conf.all.disable_ipv6=0

else
 #diabale ipv6
 printf "\nDeaktiviere ipv6. $ sudo sysctl -w net.ipv6.conf...\n"
 sudo sysctl -w net.ipv6.conf.all.disable_ipv6=1
fi

#make it more persitant

#disable:
 #sysctl -w net.ipv6.conf.default.disable_ipv6=1

#To re-enable IPv6, issue the following commands:
 #sysctl -w net.ipv6.conf.default.disable_ipv6=0