Hello Blekm,
I am sorry for the long absence. If Parallels NAT and Host-Guest ports are red or yellow, you should do the following:
Open Parallels NAT configuration, choose "Off" in IPv4 drop-down menu and click Apply. Do the same for Host-Guest adapter.
Shut down Parallels and reboot your Mac. Now go to Mac System Preferences -> Network again and choose "Using DHCP" in IPv4 drop-down menu for Parallels NAT and Host-Guest adapters. Click "Apply" for both of them.
Best regards,
Xenos