se-bypass.sh

#!/bin/bash

dst_addr=`dig +short fono.jp`
iface="vpn_vpn"

start() {
    sudo ip r | grep default | awk '{print $3,$5}' > se-bypass_save
    local arr=(`cat se-bypass_save`)
    sudo vpnclient start
    while true; do
        ip l | grep "$iface:" >/dev/null
        if [ $? -eq 0 ]; then
            break
        fi

        echo "Waiting for $iface..."
        sleep 1
    done
    ip l 
    sudo ip r a $dst_addr via ${arr[0]} dev ${arr[1]}
    sudo dhclient $iface
}

stop() {
    local arr=(`cat se-bypass_save`)
    sudo vpnclient stop
    sudo ip r d $dst_addr via ${arr[0]} dev ${arr[1]}
    sudo ip r a default via ${arr[0]} dev ${arr[1]}
    rm se-bypass_save
}

case "$1" in
    start)  start ;;
    stop)  stop ;;
    *) echo "error" ;;
esac