Connect a MacBook to the company network through VPN of second MacBook

I need to connect a new MacBook Pro to the company network and then log in once to get the account running. Unfortunately, I live very far away from the company, so it would be great if I could do it remotely. Also pressing Cmd+R or Cmd+S during boot does not work, I still get to the login screen, so this seems no solution. **My idea:** I still have the old MacBook with a working VPN connection to the company network. Is it possible to share it somehow? [ ROUTER - Wlan] -- [Wlan -- [ VPN - Tunnel ] -- OldMB -- en0 ] -- [ en0 -- NewMB ] **Question:** What would I need to configure in the old MacBook to route all eth0 packets into the tunnel? We use OpenVPN. And do I need a special cross cable to connect the two Macs? Will the routing be enough for the new MacBook to request an IP per DHCP?