ipcheck

#!/bin/vbash
source /opt/vyatta/etc/functions/script-template

IP=$(ip addr show dev eth4 | awk '{match($0,/[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+/); ip = substr($0,RSTART,RLENGTH); print ip}' | sed '/^$/d')

IP2=$(configure; show vpn l2tp remote-access outside-address | cut -f3 -d ' ';)

IP3=$(curl -m 10 ifconfig.co)

if [ -z "$IP3" ]
then
  logger -p local0.notice [IPERROR] "ifconfig.co isn't responding. is the whole internet down??"
  break
fi

if [ $IP = $IP2 ] && [ $IP = $IP3 ]
then

  logger -p local0.notice [IPCOOL] "Config had $IP2 while the web matched with $IP3" 
  exit

else

  logger -p local0.notice [HIPJINX] "Config had $IP2 while the web returned $IP3" 
  logger -p local0.notice [HIPJINX] "Attempting to correct." 
  logger -p local0.notice [HIPJINX] "Setting VPN to listen on $IP3" 
  set vpn l2tp remote-access outside-address $IP3 
  logger -p local0.notice [HIPJINX] "Setting forwarding for RasPi" 
  set nat destination rule 20 destination address $IP3
  logger -p local0.notice [HIPJINX] "Setting firewall group network"
  NEW_NET=$(ip addr show dev eth4 | awk '{match($0,/[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+\/[0-9]+/); sub(/[0-9]+\//, "0/"); ip = substr($0,RSTART,RLENGTH); print ip}' | sed '/^$/d')
  set firewall group network-group NET-WAN network $NEW_NET
  commit && save
  exit

fi

exit