text: #!/bin/bash
  
  # /usr/libexec/iiab-startup.sh is AUTOEXEC.BAT for IIAB
  # (put initializations here, if needed on every boot)
  
  if [ ! -f /etc/iiab/uuid ]; then
      uuidgen > /etc/iiab/uuid
      echo "/etc/iiab/uuid was MISSING, so a new one was generated."
  fi
  
  # Temporary promiscuous-mode workaround for RPi's WiFi "10SEC disease"
  # Sets wlan0 to promiscuous on boot if needed as gateway (i.e. AP's OFF).
  # Manually run iiab-hotspot-[on|off] to toggle AP & boot flag hostapd_enabled
  # https://github.com/iiab/iiab/issues/638#issuecomment-355455454
  if [[ $(grep -i raspbian /etc/*release) &&
          #($(grep "hostapd_enabled = False" /etc/iiab/config_vars.yml) ||
              #((! $(grep "hostapd_enabled = True" /etc/iiab/config_vars.yml)) &&
                   ! $(grep "^HOSTAPD_ENABLED=True" {{ iiab_env_file }}) ]];
                   # NEGATED LOGIC HELPS FORCE PROMISCUOUS MODE EARLY IN INSTALL
                   # (when network/tasks/main.yml hasn't yet populated iiab.env)
  
                   # RESULT: WiFi-installed IIAB should have wlan0 properly in
                   # promiscuous mode Even On Reboots (if 2-common completed!)
  
                   # CAUTION: roles/network/tasks/main.yml (e.g. if you run
                   # ./iiab-network, "./runtags network", or ./iiab-install)
                   # can toggle your hostapd_enabled setting if it detects a
                   # different "primary gateway" (eth0 vs. wlan0 vs. none) to the
                   # Internet -- even if you have not run iiab-hotspot-on|off !
              #)
          #)
     #]];
  then
  #    ip link set dev wlan0 promisc on
      echo "wlan0 promiscuous mode ON, internal AP OFF: github.com/iiab/iiab/issues/638 DISABLED"
  fi
  
  exit 0
  