network issue after using macchanger. no internet, no ipv4

I used macchanger with these commands:

sudo ifconfig eth0 down
sudo macchanger -r eth0 
sudo ifconfig eth0 up

I am using it with virtualbox on a local network, I've never had issue with that before, however now once I do that I lose internet.

the issue goes away when I reboot the machine as the MAC address reset to default. tried to reboot the router also, and my Linux works perfectly fine until I reset its MAC address.

ifconfig shows no ipv4 for eth0, restarting network-manager does not help. either.

Troubleshooting done without success :

Tried different hardware: computer, router and fresh install of virtualbox and Kali.

Tried to use the older version of virtualbox.

service network-manager restart, macchanger -e -r, dhclient eth0.

Changed /etc/network/interfaces for eth0 with dhcp then for oreth0 static.

Tried different network settings on virtualbox.

Checked the firewall disabled local and gateway.

Reinstalled network-manager.

ping 8.8.8.8 return " this site can't be reached".

Try to edit directly on network-manager:
Right click on

Network-Manager -> Edit Connections -> Choose the adapter "wifi or wired" -> ...

...then edit the MAC ADDRESS of the adapter selected.
If it worked, please feedback to us.