#!/bin/sh

tty=$2

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

# Determine if we are enslaved to a VRF, this is needed to properly insert
# the default route
VRF_NAME=""
if [ -d /sys/class/net/{{ intf }}/upper_* ]; then
    # Determine upper (VRF) interface
    VRF=$(basename $(ls -d /sys/class/net/{{ intf }}/upper_*))
    # Remove upper_ prefix from result string
    VRF=${VRF#"upper_"}
    # Populate variable to run in VR context
    VRF_NAME=" -c vrf ${VRF_NAME} "
fi

# Apply default route to either default or VRF routing table
vtysh -c "conf t" ${VRF_NAME} -c "ip route 0.0.0.0/0 {{ intf }} {{ metric }}"

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