#!/bin/bash
# tap-setup.sh

# Change username accordingly
USER="username_here"

tap_up(){
tunctl -u $USER
sysctl net.ipv4.ip_forward=1
sysctl net.ipv4.conf.wlan0.proxy_arp=1
sysctl net.ipv4.conf.tap0.proxy_arp=1
ip link set tap0 up
route add -host 192.168.1.200 dev tap0
}

tap_down(){
sysctl net.ipv4.ip_forward=0
sysctl net.ipv4.conf.wlan0.proxy_arp=0
sysctl net.ipv4.conf.tap0.proxy_arp=0
tunctl -d tap0
}

if [[ $EUID -ne 0 ]]; then
  echo "This script must be run as root" 1>&2
  exit 1
else

case "$1" in

start)
	tap_up
	;;
stop)
	tap_down
	;;
*)
	echo "Usage: $0 {start|stop}"
	;;
esac

fi

exit 0