https://discourse.ubuntu.com/t/realtek-rtl8125-ubuntu-24-04-ethernet-fix-r8125-new-driver-purge-r8125-dkms/59143

sudo apt purge r8125-dkms
sudo reboot

tar -xvf r8125-9.016.01.tar
cd r8125-9.016.01
sudo ./autorun.sh
(ignore a few errors)
sudo reboot

sudo ethtool -i eno1

vi /etc/netplan/01-netcfg.yaml

netplan apply
network:
  version: 2
  ethernets:
    eno1:
      dhcp4: true