If NetworkManager is disabled, something else needs to be enabled to configure the network. Just bringing up the link is insufficient.On a RPI4b running trixie.
In bookworm I use a simple home grown script calling ''ip link set dev eth0 up' and sets the route that has worked for years,
In trixie I'm having difficulties after disabling NetworkManager.
/etc/network/interfaces, /etc/hosts and /etc/resolv.conf in trixie are all duplicates to what works in bookworm.
When I stopped, disabled and masked NetworkManager raising and lowering eth0 worked fine. After reboot I have no network connection even to my router.
root@RPI2:~> systemctl stop systemd-networkd; systemctl start systemd-networkd;
didn't help.
root@RPI2:~> systemctl unmask NetworkManager
root@RPI2:~> systemctl enable NetworkManager
root@RPI2:~> systemctl start NetworkManager
This didn't give me net access either so put it back.
I seem to be missing something but don't know what,
It feels like gremlins in the closet.
Suggestions?
Thanks,
Mike
So, I'm curious. What specific software do you think is configuring the network device (eth0) on your system? Specifically, how does your eth0 get it's network configuration information such as: IP Address, Gateway, DNS Server, or something that indicates it should request a DHCP address?
Statistics: Posted by bls — Mon Nov 10, 2025 1:11 am