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Unable to get IP address via DHCP on HP ProLiant DL380 Gen9 with Debian (lemm.ee)

submitted 2 months ago by JackGreenEarth@lemm.ee to c/linux@lemmy.ml

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I'm having trouble getting an IP address via DHCP on my HP ProLiant DL380 Gen9 server running Debian. I've tried various troubleshooting steps, but nothing seems to work.

Error messages:

"No DHCPOFFERS received"
"No working leases in persistent database - sleeping"
"Activation of network connection failed" (GNOME)
"IP configuration unavailable" (Plasma)

Hardware:

HP ProLiant DL380 Gen9 server

Software:

Debian operating system
GNOME and Plasma desktop environments

Troubleshooting steps:

Checked network cable and ensured it's properly connected
Restarted network service
Set /etc/NetworkManager/NetworkManager.conf managed=true

Additional information:

Internet worked during the Debian installation process, but not after booting into the installed system.
The problem occurs on both GNOME and Plasma desktop environments, but Plasma provides a slightly more helpful error message.

I'd appreciate any help or guidance on resolving this issue. Has anyone else experienced similar problems with DHCP on a HP ProLiant DL380 Gen9 server with Debian?

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[–] JackGreenEarth@lemm.ee 1 points 2 months ago (1 children)

Sorry, I'm quite new to this, but how do I check that?

[–] redpotatoes@lemm.ee 3 points 2 months ago (1 children)

Do you know where your DHCP server is? What are you plugging your Debian server's network cable into? I understand that networking apparently worked while you were installing Debian, and it's unclear why that would have changed, but if I were in your position the first things I would suspect would be something with the DHCP server itself (like it stopped running or ran out of addresses), or a lack of connectivity between the Debian server and the DHCP server.

In other words, I'd start troubleshooting with your network, but it's hard to suggest specifics because we don't know anything about your network. One simple thing to try might be to restart your router. For most home networks, that's where the DHCP server will be, and it should start up on boot.

[–] JackGreenEarth@lemm.ee 1 points 2 months ago

I checked with my laptop, and the same cable provided internet there, which makes me think it's something to do with the software on the server.