I think I just found my answer. Please correct me if I’m wrong. The 5.6.18 is the series that is supported by the Linux Foundation and is generally the recommended Kernel series. The 4.19.143 is an alternate set that has a specific driver that was put in for testing purposes for a specific NIC.
Posts made by Ken Zug
RE: Kernel Versions - 4.19.143 vs 5.6.18
RE: Dell Latitude 5510 No network interface found! Kernel might not have the correct driver!
That fixed our issue. Much appreciated.