Converting a Debian Trixie from ifupdown to systemd-networking

mv /etc/network/interfaces /etc/network/interfaces.save

Install systemd-networkd and systemd-resolved

sudo apt install systemd-networkd systemd-resolved
sudo systemctl enable systemd-networkd

create a network config file in /etc/systemd/network/interface.network

[Match]
Name=e*

[Network]
DHCP=yes

systemctl restart systemd-networkd

ip a

systemctl disable --now networking