#!/bin/bash

# Create tap interfaces tap00, tap0, tap1 if they don't exist. Tap2 is created by script for bridging
# Assign IP addresses to it tap1

tap1_ip='192.168.1.2/24'

for int in tap00 tap0 tap1; do
 
   ip link show dev "$int" &>/dev/null
   int_ret="$?"
   [ "$int_ret" != 0 ] && sudo ip tuntap add dev "$int" mode tap user $(whoami)

   sudo ip link set dev "$int" up
  
# Set ip only for tap1. 
   if [ "$int" == 'tap1' ]; then
      ip address show dev "$int" | grep -q "$tap1_ip"
      ip_ret="$?"
      [ "$ip_ret" != 0 ] && sudo ip addr add "$tap1_ip" dev "$int"
   fi
done

#Allow traffic for tables
for table in INPUT OUTPUT FORWARD; do
   sudo iptables -P "$table" ACCEPT
done

exit 0