PiHole stopped working after DietPi OS update interrupted

[deHakkelaar]

@jacorizla

@deHakkelaar

sudo rgrep -v '^ *\(#\|$\)' /etc/network/interfaces*

No such file or directory

Could you try above one again, maybe a typo, bc if it doesnt output anything, below one also shouldnt right?

@jacorizla

grep -Hn -A3 -B1 -E '(^|\s)eth0(\s|$)' /etc/network/interfaces /etc/network/interfaces.d/* 2>/dev/null
/etc/network/interfaces-8-# Ethernet
/etc/network/interfaces:9:allow-hotplug eth0

Which would mean those files are gone now somehow (EDIT: or all directives are hashed out/commented).
Below is an example of a skeleton config:

$ sudo rgrep -v '^ *\(#\|$\)' /etc/network/interfaces*
/etc/network/interfaces:source-directory /etc/network/interfaces.d

Or below on another Linux box:

$ sudo rgrep -v '^ *\(#\|$\)' /etc/network/interfaces*
/etc/network/interfaces:auto lo
/etc/network/interfaces:iface lo inet loopback
/etc/network/interfaces:auto eth0
/etc/network/interfaces:iface eth0 inet dhcp

@jacorizla

wlp170s0: offered 192.168.0.19 from 192.168.0.1

Above output is confusing me bc its mentioning a wireless interface wlp170s0 and not eth0.
It also seems to be still connected via Wifi.
What does below output (it redacts the MAC's)?

ip -br l | awk '{print $1,$2,$4}' | column -t

@jacorizla

@deHakkelaar

sudo grep -v '^ *\(#\|$\)' /etc/dhcpcd.conf

duid
persistent
vendorclassid
option domain_name_servers, domain_name, domain_search
option classless_static_routes
option interface_mtu
option host_name
option rapid_commit require dhcp_server_identifier
slaac private

dhcpcd works like so, if you dont configure any IP details for particular interfaces, like in your case from above output, it will try to automatically acquire IP details via DHCP for all detected interfaces.

You either have to configure manual static IP details via dhcpcd.conf,
or you have to purge/uninstall dhcpcd from your system and configure static IP details in the /etc/network/interfaces file (or files in the .d folder if configured correctly) so ifupdown can configure IP details instead of dhcpcd:

$ systemctl is-enabled networking.service
enabled

$ systemctl cat networking.service
[..]
Description=Raise network interfaces
[..]
ExecStart=/sbin/ifup -a --read-environment

$ man ifup
[..]
DESCRIPTION
       The  ifup and ifdown commands may be used to configure (or, respec‐
       tively, deconfigure) network interfaces based on interface  defini‐
       tions  in the file /etc/network/interfaces.

EDIT: below a dhcpcd example:

@deHakkelaar

pi@ph5:~ $ tail /etc/dhcpcd.conf
[..]
interface eth0
  static ip_address=10.0.0.4/24
  static routers=10.0.0.1
  static domain_name=home.dehakkelaar.nl
  static domain_name_servers=10.0.0.1

You have to decide which one you want to use?