Use technique other than ping to assess connection status about tmo-monitor HOT 7 OPEN

#!/bin/bash
# Checks for WAN connectivity via curl6 (avoid IPv4 emulation)
# Usages: $0 <reboot_if_fail>

# add your website targets here
targets=(
'2606:4700:4700::1111'
'2620:119:35::35'
'2001:4860:4860::8888'
)

reboot_if_fail=$1 

# Print Config 
/tmo-monitor/tmo-monitor.py --skip-bands --ping-count 0

for host in $targets
do
  curl -g -6 -Is -m 1 --head --interface $intf http://[$host]:80/ 2>$1 | grep -w "200\|301"
  if [ $? == 0 ]
  then
    echo "Online"
    exit 0
  fi
done 
 
# fail
 echo "Failed"
  if [ $reboot_if_fail == 1 ]
  then
  echo "Forcing Reboot"
    /tmo-monitor/tmo-monitor.py --reboot
  fi
exit 1

2023/03/27 14:16:16 [DEBUG] Enabled file logging to /var/log/tmo-monitor.log
2023/03/27 14:16:16 [DEBUG] Starting new HIT connection (1): 192.168.12.1:80
2023/03/27 14:16:16 [DEBUG] http://192.168.12.1:80 "POST /IMI/u1/auth/login HTTP/1.1' 200 403
2023/03/27 14:16:16 [DEBUG] Starting new HTTP connection (1): 192.168.12.1:80
2023/03/27 14:16:16 [DEBUG] http://192.168.12.1:80 "GET /TMI/v1/network/telemetry?get=all HTTP/1.1'
200 2356
eMB ID check passed, on <redacted>.
2023/03/27 14:16:16 [DEBUG] Starting new HITP connection (1): 192.168.12.1:80
2023/03/27 14:16:16 [DEBUG] http://192.168.12.1:80 "GET /IMI/u1/gateway?get=all HTTP/1.1" 200 1089
Camping on <redacted>.
Camping on <redacted>.
PING google.com (142.250.190.14) 56(84) bytes of data.

--- google.com ping statistics ---
1 packets transmitted, 0 received, 100% packet loss, time Oms


2023/03/27 14:16:26 [DEBUG] Starting new HTTPS connection (1): google.com:443
2023/03/27 14:16:29 [DEBUG] https://google.com:443 "GET /generate_204 HITP/1.1" 204 0
No reboot necessary.
2023/03/27 14:16:29 [INFO] 4G: <redacted> | 5G: <redacted> | EMB ID: <redacted> | Avg Ping: -1 ms | Uptime: 43248 sec

# Rename file to `.env` to use.
# The .env file will be loaded from the current or (recursive) parent directories.
# All settings are prefixed with `tmo_` to allow for common `.env` files at the root.

# Gateway model
tmo_model=ARCKVD21

# Trashcan login settings
tmo_username=admin
tmo_password=<redacted>

# Connectivity check
tmo_connectivity_check=http

# Reboot settings: minimum uptime (seconds) & reboot on failed check {True, False}
tmo_http_reboot=True

# General settings
tmo_logfile=/var/log/tmo-monitor.log
tmo_log_all=True