how to forward traffic to ipsec vpn tunnel created using openswan?

I want to forward traffic to ipsec vpn tunnel created by openswan. I searched the internet but i couldn't find the solution. check below :- 1- VPN tunnel is created and it's name is demo-connection-vpn. 2- I need to forward all traffic that destination is 185.127.140.1 to vpn tunnel. Check my below ipsec.conf file config setup plutodebug=all plutostderrlog=/var/log/pluto.log protostack=netkey nat_traversal=yes virtual_private=%v4:10.0.0.0/8,%v4:192.168.0.0/16,%v4:172.16.0.0/12 oe=off conn demo-connection-vpn authby=secret auto=start ike=AES128-SHA1 ## phase 1 ## keyexchange=ike aggrmode=no ikelifetime=86400s ## phase 2 ## phase2=esp phase2alg=aes128 ikelifetime=86400s compress=no pfs=no type=tunnel left=208.109.152.48 leftsourceip=208.109.152.48 leftsubnet=208.109.152.48/32 right=185.127.140.32 rightsubnet=185.127.140.0/27