#!/bin/sh

tty=$2
ipparam=$6

# Only applicable for Wireless Modems (WWAN)
if [ -z "$(echo $tty |  egrep "tty(USB|ACM)")" ]; then
    exit 0
fi

# device name and metric are received using ipparam
device=`echo "$ipparam"|awk '{ print $1 }'`
metric=`echo "$ipparam"|awk '{ print $2 }'`

# Determine if we are enslaved to a VRF, this is needed to properly insert
# the backup default route
if [ -d /sys/class/net/${device}/upper_* ]; then
    # Determine upper (VRF) interface
    VRF=$(basename $(ls -d /sys/class/net/wlm0/upper_*))
    # Remove upper_ prefix from result string
    VRF=${VRF#"upper_"}
    # Configure VRF default route
    vtysh -c "conf t" -c "vrf $VRF" -c "no ip route 0.0.0.0/0 ${device} ${metric}"
else
    # No VRF, use default routing table
    vtysh -c "conf t" -c "no ip route 0.0.0.0/0 ${device} ${metric}"
fi

DIALER_PID=$(cat /var/run/${device}.pid)
logger -t pppd[$DIALER_PID] "removed default route via $device metric $metric"