is /etc/network/interfaces.d/ redundant with this

Question

I use a Raspberry Pi, and have the following set in /etc/dhcpcd.conf:

# static IP configuration:
denyinterfaces wlan0
interface eth0
static domain_name_servers=8.8.8.8 1.1.1.1
interface usb0
static ip_address=10.0.0.2/24
static routers=10.0.0.1
static domain_name_servers=10.0.0.1 8.8.8.8 1.1.1.1

Would this make the usb0-cfg, wlan0-cfg, eth0-cfg and lo-cfg files I have in /etc/network/interfaces.d/ redundant?

allow-hotplug eth0
iface eth0 inet dhcp
auto lo
iface lo inet loopback
allow-hotplug usb0
iface usb0 inet static
  address 10.0.0.2
  netmask 255.255.255.0
  network 10.0.0.0
  broadcast 10.0.0.255
  gateway 10.0.0.1
  metric 203
allow-hotplug wlan0
iface wlan0 inet static

The wlan0 is put down and a monitor mode created in a python script, hence the denyinterfaces wlan0.

Before I just blind remove these files and break my Pi, I thought I'd ask here.

I'm not entirely sure about this, but I have a vague recollection that you should not touch anything in /etc/network when using dhcpcd. — Seamus, Oct 17 '23 at 17:56
As in delete everything there when using dhcpcd, or leave it be? — Jeroen Oudshoorn, Oct 17 '23 at 18:22
Does this answer your question? How do I set up networking/WiFi/static IP address on Raspbian/Raspberry Pi OS? — Milliways, Oct 17 '23 at 21:02
No, you need not delete it; IIRC dhcpcd writes those /etc/network files. — Seamus, Oct 19 '23 at 01:30
@Seamus I can assure you dhcpcd NEVER writes anything to /etc/network. — Milliways, Oct 19 '23 at 06:43

score 0 · Accepted Answer · answered Oct 19 '23 at 20:24

I removed all configuration files in /etc/network/interfaces.d/ and added the following to /etc/dhcpcd.conf:

# static IP configuration:
denyinterfaces wlan0
interface eth0
static domain_name_servers=8.8.8.8 1.1.1.1
metric=202
interface usb0
static ip_address=10.0.0.2/24
static routers=10.0.0.1
static domain_name_servers=10.0.0.1 8.8.8.8 1.1.1.1
metric=203
interface bnep0
metric=204
interface lo

I also edited /boot/cmdline.txt with the following line at EOF:

systemd.restore_state=0 rfkill.default_state=1

This will automatically set rfkill unblock all at boot, each boot.

is /etc/network/interfaces.d/ redundant with this

1 Answers1