OpenVPN, but allow SSH

install-resolv-linkage.sh

sudo apt install openvpn-systemd-resolved

start-vpn.sh

#!/usr/bin/env bash                                                                                                                 

ip rule add from $(ip route get 1 | grep -Po '(?<=src )(\S+)') table 128
ip route add table 128 to $(ip route get 1 | grep -Po '(?<=src )(\S+)')/32 dev $(ip -4 route ls | grep default | grep -Po '(?<=dev )')
ip route add table 128 default via $(ip -4 route ls | grep default | grep -Po '(?<=via )(\S+)')

# To avoid password prompts you can create a file with
# username and password on lines 1 and 2 respectively,
# then add an auth-user-pass entry, e.g.
# auth-user-pass pass.txt

openvpn softether_vpn.ovpn