Add route table when you have both wi-fi and ethernet connected to different network.

add-soute.sh

#!/bin/bash


# if ethernet DOES NOT connected, remove route table
ifconfig en6 | grep 'inet 10.200.' || {
    echo cleanup
    sudo route delete 10.0.0.0/8 10.200.33.1
    networksetup -setdnsservers Wi-Fi 114.114.114.114
    networksetup -setsearchdomains Wi-Fi ''
    exit 0
}


netstat -nr|awk '{if($1 == "10" && $2 == "10.200.33.1") print}' | grep 10.200.33.1 && {
    echo "Alreay has the right route table"
    exit 0
}

sudo route add 10.0.0.0/8 10.200.33.1

networksetup -setdnsservers Wi-Fi 10.200.2.1
networksetup -setsearchdomains Wi-Fi 'notsobad.com'