Wan Down Event and/or Notification?

[Kal1975]

Is there an event that occurs when the WAN goes down? I'm looking to write a script when it goes down. Tried searching but didn't find anything.

I have the situation where my WAN connection sometimes goes down. When I notice it, I typically just turn the WAN off, wait a few seconds, turn it back on and then everything is fine again.

I was hoping to write a script that would automate that until I can determine exactly what's going on and/or follow up with my ISP.

 

[Bamsefar]

Maybe something like this?

#!/bin/sh
#

# loggninginfo in syslog
scr_name="$(basename $0)[$$]"

# Check to see if this script already is running...?
if [ ! -d /tmp/CheckInternet ];
then
  echo "CheckIfInternet is missing, will create map." | logger -t $scr_name
  mkdir /tmp/CheckInternet
else
  echo "CheckIfInternet, will exit this process." | logger -t $scr_name
  exit
fi
#
# Never ending loop...
while [ 1 ]
do
# IP numbers below is MY installation - it will for sure differ for other peoples installation - so PLEASE change!!
# The wget statement is for calling my HomeSeer server for home automation - so you can change that to whatever you need.
# If WAN ip is 178.78.x.x then online, if 192.168.x.x then it is backup
  if ifconfig | grep -q 178.78; then
      wget -qO- "xxx/JSON?request=controldevicebylabel&ref=743&label=Online" >/dev/null 2>&1
  elif ifconfig | grep -q 192.168; then
      wget -qO- "xxx/JSON?request=controldevicebylabel&ref=743&label=Backup" >/dev/null 2>&1
  else
      wget -qO- "xxx/JSON?request=controldevicebylabel&ref=743&label=Offline" >/dev/null 2>&1
  fi
# 
  sleep 60
#
done

echo "CheckIfInternet exits, this should not happen this way..." | logger -t $scr_name

 

[xtropodx]

I've just gone & reinstalled merlin & everything else, including WAN script which I've found useful; https://www.snbforums.com/threads/need-a-script-that-auto-reboot-if-internet-is-down.43819/