Trying to understand why Pi-hole DHCP no longer works with my Virgin Hub 3.0.

[deHakkelaar]

@Steve5

It’s Debian GNU/Linux 13 (trixie).

They switched from dhcpcd to network-manager with Debian 12 (Bookwork) and up.
You can check with below two which one is enabled on your Pi:

systemctl is-enabled dhcpcd.service

systemctl is-enabled NetworkManager.service

If its Network Manager, you can configure "manual" static IP details with below one:

sudo nmtui

Example config below:

@deHakkelaar

Here is mine for IPv4 only:

$ nmcli -t -f name con show --active | xargs -d '\n' -n 1 nmcli -p -f ipv4.method,ipv4.addresses,ipv4.gateway,ipv4.dns,ipv4.dns-search connection show
===============================================================================
                Connection profile details (Wired connection 1)
===============================================================================
ipv4.method:                            manual
-------------------------------------------------------------------------------
ipv4.addresses:                         10.0.0.2/24
-------------------------------------------------------------------------------
ipv4.gateway:                           10.0.0.1
-------------------------------------------------------------------------------
ipv4.dns:                               10.0.0.1
-------------------------------------------------------------------------------
ipv4.dns-search:                        home.dehakkelaar.nl
-------------------------------------------------------------------------------
===============================================================================
                        Connection profile details (lo)
===============================================================================
ipv4.method:                            manual
-------------------------------------------------------------------------------
ipv4.addresses:                         127.0.0.1/8
-------------------------------------------------------------------------------
ipv4.gateway:                           --
-------------------------------------------------------------------------------
ipv4.dns:                               --
-------------------------------------------------------------------------------
ipv4.dns-search:                        --
-------------------------------------------------------------------------------