Arch Linux

rantanran

Member

From: Germany

Registered: 2014-12-20

Posts: 16

[SOLVED] server has no connectivity besides ipmi

Suddenly today I could not reach my server for any reason.

My router did show that the IP is inactive (static).

I can access my server via ipmi and see that the systemd-resov server has some problems:

systemctl status systemd-resolved

systemd-resolved[2191]: Using degraded feature set (UDP) for DNS server 8.8.8.8
systemd-resolved[2191]: Using degraded feature set (UDP) for DNS server 192.168.178.1

I also see this:

systemctl status systemd-networkd.service

systemd-networkd[373]: rtnl: received neighbor for link '84' we don't know about, ignoring.

ip neighbor show

192.168.178.1 dev enp0s25 INCOMPLETE
etc.

I can not ping my router, which is strange.

I do not understand why the server suddenly did loose connectivity.
Maybe a correlation but not a cause, just guessing here:

I have installed adguard as a docker container on my system. I am using home assistant and just enabled this as a addon. Maybe this did play with my configs since this container is running in host mode, but that is just a guess.

Does anybody have an idea what I can check to find out the problem?

EDIT:
1. more info

Last edited by rantanran (2020-08-06 18:24:25)

rantanran

Member

From: Germany

Registered: 2014-12-20

Posts: 16

Re: [SOLVED] server has no connectivity besides ipmi

Got it.
It was a faulty cable or port on the switch!