Have to install r8168 driver and remove r8169.
/etc/apt/sources.list
deb http://ftp.us.debian.org/debian bookworm main contrib non-free non-free-firmware
deb http://ftp.us.debian.org/debian bookworm-updates main contrib
# Proxmox VE pve-no-subscription repository provided by proxmox.com,
# NOT recommended for production use
deb http://download.proxmox.com/debian/pve bookworm pve-no-subscription
# security updates
deb http://security.debian.org bookworm-security main contrib
/etc/apt/sources.list.d/pve-enterprise.list
#deb https://enterprise.proxmox.com/debian/pve bookworm pve-enterprise
/etc/apt/sources.list.d/ceph.list
#deb https://enterprise.proxmox.com/debian/ceph-quincy bookworm enterprise
deb http://download.proxmox.com/debian/ceph-quincy bookworm no-subscription
apt update
apt install pve-headers -y
apt install r8168-dkms -y
modprobe -r -v r8169 && reboot now