Can't connect to wired ethernet after update to kernel 5.8

[Elmo Ramos]

After today update from kernel 5.4 to kernel 5.8 i can't connect to wired connection, I have the same bug that has been reported upstream https://bugzilla.kernel.org/show_bug.cgi?id=209839

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-image-5.8.0-36-generic 5.8.0-36.40~20.04.1
ProcVersionSignature: Ubuntu 5.8.0-36.40~20.04.1-generic 5.8.18
Uname: Linux 5.8.0-36-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.14
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Fri Jan 8 00:55:14 2021
InstallationDate: Installed on 2020-07-12 (179 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
SourcePackage: linux-signed-hwe-5.8
UpgradeStatus: No upgrade log present (probably fresh install)

[Elmo Ramos (elmoramos)]

I managed to solve the problem by installing the r8168 driver version 8.048.03 directly from the realtek website.

https://www.realtek.com/en/component/zoo/category/network-interface-controllers-10-100-1000m-gigabit-ethernet-pci-express-software