fix routing (ssh) when connected to openvpn

route.sh

# https://serverfault.com/questions/659955/allowing-ssh-on-a-server-with-an-active-openvpn-client
# https://serverfault.com/a/660106
ip rule add from x.x.x.x table 128
ip route add table 128 to y.y.y.y/y dev ethX
ip route add table 128 default via z.z.z.z

# Where x.x.x.x is your public IP, y.y.y.y/y should be the subnet 
# of your public IP address, ethX should be your public Ethernet 
# interface, and z.z.z.z should be the default gateway.
# Note that this hasn't worked for me (using Debian and PrivateInternetAccess) 
# but may help you out.

# https://serverfault.com/a/918441
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 )(\S+)')
ip route add table 128 default via $(ip -4 route ls | grep default | grep -Po '(?<=via )(\S+)')