DANOS - Update PBR routing table

update_pbr_route.sh

#!/bin/vbash
DHCP_INTERFACE=$1
ROUTING_TABLE=$2

DHCP_LEASES=/var/lib/dhcp/dhclient_${DHCP_INTERFACE}.leases

if ! [ -f $DHCP_LEASES ]; then
    echo "Unable to find DHCP Lease for ${DHCP_INTERFACE}"

    exit
fi

CURRENT_DHCP_ROUTER=$(grep "option routers" ${DHCP_LEASES} | tail -n 1 | awk {'print $3'} | sed 's/;//g')

source /opt/vyatta/share/vyatta-cfg/functions/script-wrapper

configure

CURRENT_ROUTER=$(cmd_helper show protocols static table ${ROUTING_TABLE} route 0.0.0.0/0 next-hop | grep next-hop | awk {'print $2'})

if ! [ "$CURRENT_ROUTER" ] || [ "$CURRENT_DHCP_ROUTER" != "$CURRENT_ROUTER" ]; then
    echo "Updating route"

    if [ "$CURRENT_ROUTER" ]; then
        cmd_helper delete protocols static table ${ROUTING_TABLE} route 0.0.0.0/0 next-hop
    fi
    
    cmd_helper set protocols static table ${ROUTING_TABLE} route 0.0.0.0/0 next-hop ${CURRENT_DHCP_ROUTER}
    commit

    exit
fi

echo "No configuration changes"

cmd_helper exit discard

Raw config: https://gist.github.com/relvinhas/e9d53adaabc50987b636a87b725fef7a
VM setup: https://gist.github.com/relvinhas/a60845913f8bcfdd8592c57e34374459