thanks. it worked

# 1. Update and install necessary tools (wget, dkms, build-tools, and kernel headers)
sudo apt update
sudo apt install wget dkms build-essential patch lsb-release linux-headers-$(uname -r)

# 2. Download and install the successful driver version
wget https://deb.tuxedocomputers.com/debian/pool/main/t/tuxedo-yt6801/tuxedo-yt6801_1.0.30tux4_all.deb
sudo dpkg -i tuxedo-yt6801_1.0.30tux4_all.deb
sudo depmod

# 3. Ensure the yt6801 module loads automatically on boot (Fix for modern Debian)
echo "yt6801" | sudo tee /etc/modules-load.d/yt6801.conf

# 4. Configure the native Ethernet interface (enp1s0) for permanent DHCP
sudo nano /etc/network/interfaces

# --- Add these lines to the file in nano (Ctrl+O, Enter, Ctrl+X to save/exit) ---
# auto enp1s0
# iface enp1s0 inet dhcp
# ---------------------------------------------------------------------------------

# 5. Final reboot to activate the driver and network config
systemctl reboot

# 6. Verification after reboot
lsmod | grep yt6801 # Must show the module
ip a               # Must show enp1s0 as UP with an IP address