[Solved] Resolv.conf is not updated after an OpenVPN connection

After connecting a VPN on Linux (my case an Ubuntu) that resolv.conf is not updated and you can’t resolve names from that network as expected.

After searching a bit I found this website that gave me a solution.
You can check in detail here: https://dev.to/setevoy/arch-linux-openvpn–resolvconf-is-not-updated-2470

After connection to the VPN has been performed, we can observe that resolv.conf hasn’t been updated.

$ cat /etc/resolv.conf

# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
#     DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
# 127.0.0.53 is the systemd-resolved stub resolver.
# run "systemd-resolve --status" to see details about the actual nameservers.

nameserver 127.0.0.53
search home

Modify your opvn file and these new lines (bottom is fine): 

...
script-security 2 
up /etc/openvpn/update-resolv-conf 
down /etc/openvpn/update-resolv-conf

Restart your VPN connection and check again your resolv.conf file.

$ cat /etc/resolv.conf

# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
#     DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
# 127.0.0.53 is the systemd-resolved stub resolver.
# run "systemd-resolve --status" to see details about the actual nameservers.

nameserver 10.11.0.2
nameserver 127.0.0.53
search home

After terminating your VPN connection, resolv.conf file will be restored to its previous state.