Como posso reduzir o consumo de energia do dispositivo Ethernet Realtek?

Eu tenho um laptop com debian 12 e o Realtek Ethernet Controller consome cerca de 10W de acordo com o powertop:

Power est.              Usage       Events/s    Category       Description
  11.9 W      0.0 pkts/s                Device         Network interface: enp4s0 (r8168)
 92.7 mW     97.5 ms/s     191.0        Process        [PID 35665] /usr/lib/xorg/Xorg vt3 -displayfd 3 -auth /run/user/1000/gdm/Xauthority -nolisten tcp -background none -noreset -ke
 84.2 mW     88.6 ms/s      15.4        Process        [PID 36881] /usr/libexec/gnome-terminal-server

O consumo de energia acontece mesmo que o dispositivo esteja desligado:

$ ip a
2: enp4s0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc fq_codel state DOWN group default qlen 1000
    link/ether a8:3e:43:5d:a5:1a brd ff:ff:ff:ff:ff:ff

Existe alguma maneira de desativar completamente este dispositivo ou pelo menos reduzir o consumo de energia?

Alguns diagnósticos adicionais:

$ lspci | grep -i "Ethernet"
04:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 15)

$ nmcli device show enp4s0
GENERAL.DEVICE:                         enp4s0
GENERAL.TYPE:                           ethernet
GENERAL.HWADDR:                         A8:3E:43:5D:A5:1A
GENERAL.MTU:                            1500
GENERAL.STATE:                          20 (unavailable)
GENERAL.CONNECTION:                     --
GENERAL.CON-PATH:                       --
WIRED-PROPERTIES.CARRIER:               off
IP4.GATEWAY:                            --
IP6.GATEWAY:                            --