Not establishing a VPN tunnel

[UserXGnu]

So, I have a OS, and in it I have an interface called wlp2s0 with the ip 10.0.0.114 and I have another virtual interface for the virtualbox machines called: vboxnet0 with the ip 192.168.56.1.

So I want to make my virtual machine (a kali) to connect to the vpn through my host OS to get connection with the outside world (internet). But look to what happens:

the one at the right is the kali virtual machine and the other the OS host (a archlinux)