random/v6

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#!/bin/sh
# ipv6 clone helper script - developed by acidvegas (https://git.acid.vegas/random)
interface='eth0'
subnet='2607:5300:201:3000:'
rnd() {
echo $(tr -dc 'A-F0-9' < /dev/urandom | head -c4)
}
usage() {
echo "v6 add <num> | generate & add <nun> ipv6 addresses (saved to ~/.v6.log)"
echo "v6 del | delete all ipv6 addresses created by this script"
}
if [ "$#" = '2' ]; then
if [ "$1" = 'add' ]; then
for i in $(seq $2); do
address = "$subnet:$(rnd):$(rnd):$(rnd):$(rnd)"
sudo ip addr add $address dev $1
echo $address
echo $address >> .v6.log
done
elif [ "$1" = 'del' ]; then
while IFS= read -r address; do
sudo ip addr del $address dev $interface
done < .v6.log
rm .v6.log
else
usage
else
usage
fi