All Questions
Tagged with network-manager networking
2,549
questions
0
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answer
24
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How to match the --out-interface to the same --in-interface in iptables
The system have multiple interfaces: eth0, eth1, eth2, ... br0, br1, br2, ...etc.
The following rule will allow packets from "br0" to "br0":
iptables -A FORWARD -i br0 -o br0 -j ...
- 393
0
votes
1
answer
22
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Unabe to do KVM networking over WiFi Interface
Running Ubuntu Server 24.04. I am trying to connect a Debian VM (KVM) to be accessible through my Home Network. Host to VM communication is not necessary.
On the host Machin there is a Lan port that I ...
- 117
-1
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0
answers
26
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Setup Static IP for USB Ethernet Adapter Ubuntu Server
im using a USB Ethernet Adapter for my machine and I would like to setup static IP for that. Ive been following tutorials from other sources but it only applies to cable ethernet.
Im using Ubuntu ...
1
vote
0
answers
103
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Force network manager to always connect to highest autoconnect-priority network even when already connected
I am using Network Manager (nmcli) to configure two connections to two different Wi-Fi networks wifi1 and wifi2.
I have set up a higher connection.autoconnect-priority for wifi2 (let's say 2) than for ...
- 61
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votes
0
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37
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System network connection
I tried installing a vpn (hide.me) then uninstalled it since I was not able to use it. After uninstalling the vpn, my Ubuntu was no longer connecting to the internet. It shows that the internet is ...
0
votes
2
answers
49
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Kubuntu 22.04 wlp2s0 wifi connected, but doesn't exist in "connections" app
Running kubuntu 22.04 on older Dell Inspiron P75F.
Wifi connects as wlp2s0 and internet is accessible. However, the device is missing from the "connections" app and the "network" ...
- 21
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38
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Ubuntu does not see any wifi networks
Hello I am new to Linux so sorry if i don´t give enough information.
As stated above Ubuntu does not see any WiFi networks.
Current setup
Operating system: Ubuntu 24.04 LTS
Processor: Intel Core i7-...
- 9
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0
answers
77
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WireGuard - Server Through Gnome Network Manager?
Can a WireGuard server be setup through Gnome network-manager? with a wireguard.conf file - no terminal or other program needed.
I need 3 clients to be able to connect to the server.
Internet traffic ...
- 83
0
votes
1
answer
32
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Ubuntu WiFi hotspot MIA
I have a fresh Ubuntu 24.04.4 with a USB Wifi dongle from BrosTrend (AC1L), the most Linux friendly I can find. This is a minimal desktop version, but I initially turned off X/GNOME as it was mainly ...
- 125
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1
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317
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WiFi not connecting after upgrade to Ubuntu 24.04. Problem with apparmor?
After upgrading to Ubuntu 24.04 I can't make any network connections, wired or wireless with automatic DHCP enabled. If I set IP Address, Netmask and Gateway manually everything works. To get the ...
- 45
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38
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How to create a network bridge between wlan0 and et1 to a second eth0 device?
I have a network topology as described in the linked image. Network Setup
I have a WiFi router on a private 10.12.12.1 network. An Ubuntu 20.04 box, on a Nvidia Jetson, is connected to the WiFi ...
- 1
0
votes
0
answers
127
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wifi(wlan) not working on ubuntu 24.04?
i think the error is in the image
I recently updated to Unbuntu 24.04 LTS version. During that day everything worked fine but today I encountered a problem connecting to my wifi, It no longer works. I ...
0
votes
0
answers
52
views
Wifi not working on ubuntu?
I recently updated to Unbuntu 24.04 LTS version. During that day everything worked fine but today I encountered a problem connecting to my wifi, It no longer works. I restarted my computer, but I can ...
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answers
51
views
Unit network-manager.service not found
I installed node.js then it started removing something then I found out I couldn't access my network (wifi nor network adapter). I have tried to run different program still same.
0
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answers
320
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Ubuntu 24.04 LTS VPN Connections in Network Manager
I've done a profile change on my laptop to have domain logins. In doing so, I copied all config files in my home directory to a temp location, and then into the new home directory, obviously doing a ...
0
votes
0
answers
88
views
Unable to Connect to Internet After Upgrading to Ubuntu 22.04.4
On Thursday, My OS updated to 22.04.4, and the nightmare began.
Everything worked fine until Friday morning when even the network settings on my PC disappeared. I received the "NetworkManager not ...
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1
vote
0
answers
236
views
Ubuntu 24.04 server with NetworkManager does not configure eth0
I installed 24.04 server on a Raspberry Pi 4. The initial boot recognizes eth0. After I installed NetworkManager, I created a netplan configuration for eth0, wlan0, and wlan1. Upon reboot, eth0 was ...
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0
votes
1
answer
316
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Slow speed Ethernet issue on Ubuntu 24.04
I recently changed my system to Ubuntu from Windows and I use my mobile and USB ethernet to connect, I used to get 500+ mbps on Windows by using USB tethering, but on Ubuntu 24.04 I am getting only 4 ...
- 1
0
votes
0
answers
2k
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Where's NetworkManager in ubuntu 24.04?
The NetworkManager service is absent from my ubuntu server 24.04. I still get internet connections, but I can't manage them through systemd like before.
Is it really a bug, or is it by design, in ...
- 109
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votes
0
answers
105
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Ethernet Disabled after software update reboot 5/4/2024 22.04.4 LTS -solved but WHY?
Symptoms: No Internet, Networking Icon at the top is gone, the settings gui shows no interfaces. ifconfig by itself shows the loopback interface and nothing else, but an ifconfig -a shows any and all ...
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0
answers
27
views
How can i bridge eth interfaces with no bridge (let me explain)
I have a device that has 3 ETH interfaces.
This way I installed the Ubuntu server on it to use the Pi-Hole application
I want to use my ETH0 to receive the Wan cable from my internet provider moden ...
0
votes
2
answers
197
views
L2TP IPSEC not working after upgrade from Ubuntu 20 to 22
I had configured on Ubuntu20 which was working fine. Recently I upgraded the system to Ubuntu 22.04 but now I am unable to connect to the office vpn.
I am attaching the logs
journalctl -xe
May 03 12:...
0
votes
1
answer
59
views
WiFi disconnect-reconnect loop when using NetworkManager
It's as the title says, when I use the desktop GUI tool to connect to WiFi, I end up with my WiFi disconnecting and reconnecting every couple of minutes.
Here's part of the output from the syslog via ...
- 367
0
votes
0
answers
31
views
wlan0 won't establish connection after MAC change UBUNTU Touch
I am trying to change the MAC address of my wlan0 device, I tried with ifconfig wlan0 hw ether. I tried also macchanger, but after I changed it WiFi won't establish a connection. It sees the WiFi ...
0
votes
2
answers
247
views
IpVanish VPN failed to connect
I am trying to install IpVanish on Ubuntu 23.10, but I get connection failure every time, the activation of the network connection has failed
VPN settings:
IPV6 settings:
0
votes
0
answers
28
views
1Gbe Interface stops working when MTU set to 9100 on 100G interface
I have a server with 2x1gbe ports LOM and a single port 100G nic.
Our 1gbe network is different than our 100G network and both have access to the internet. I would like to be able to use both ...
0
votes
0
answers
48
views
Can I configure my netplan configuration so that all UDP outgoing broadcast traffic goes thru a specific Ethernet interface?
I've got Ubuntu Desktop 22.04 on a computer with 2 Ethernet interfaces. I've been reading netplan documentation for the past 2 hours and I'm running out of ideas (or understanding).
eth1 connects to ...
- 129
0
votes
0
answers
26
views
Network Manager keeps asking for "Legitimation for WIFI"
I have an elderly person whose desktop is connected to the LAN via WIFI card.
The WIFI is always the same, "Allow all users to connect" is already checked, the main user gets automatically ...
- 9
1
vote
0
answers
49
views
Wi-Fi connectivity issues on Ubuntu Server
I'm trying to setup to run my old laptop as a home server using Ubuntu Server 22.04.4.
The problem is after configuration, my laptop can not detect any wifi using
nmcli device wifi list
I have tried ...
- 11
0
votes
0
answers
68
views
Ethernet problems on Ubuntu 22.04 LTS
Before anything, I'm using a somewhat old Asus laptop model (Q550LF). With that said here is the more detailed specs of the problem:
0
votes
1
answer
82
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Prioritize routes in NetworkManager when using custom IP with DHCP fallback
I'm using network manager to set a custom IP address, but also keeping DHCP activated in case I connect my headless device to another network, I automatically sets the default gateway and everything. ...
- 101
0
votes
0
answers
54
views
Connecting to two different networks simultaneously using two network adapters to access Internet
Description
I have two wifi adapters, each one is connected two a different network, while each network is connected to the Internet.
The two networks have the same network mask and my computer has ...
- 789
1
vote
0
answers
56
views
Network setup for a mobile robot base
I am working on a mobile robot base that is supposed to be controlled from a stationary control station. The robot itself has multiple computers onboard, which are on an internal Ethernet network. The ...
- 31
0
votes
1
answer
86
views
Sudden problem with WiFi internet access with one specific Ubuntu 22.04 device with one specific router
I have an Ubuntu 22.04.4 LTS (with Intel Wi-Fi 6 AX201) that suddenly it just can't access the internet with my home WiFi. It was completely unexpected because it was working fine up until now, and ...
2
votes
1
answer
696
views
ip-config-unavailable DHCP error from NetworkManager
Overview and Environment
I recently set up a new VirtualBox VM and ran into some strange network behavior. The machine is running Ubuntu 22.04 and after installing the virtualbox guest additions, my I ...
- 141
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votes
0
answers
88
views
Network Manager keeps crashing
When I manually try to turn off my WiFi or switch network from the system tray, NetworkManager crashes and I get this NetworkManager needs to be running
I followed a solution from here Ask Ubuntu | ...
0
votes
2
answers
175
views
Two NICs on same network - one for internet, one for LAN
I have two NICs in my home server - both are connected to same network. One is 2.5Gbps (which I'd like to use for LAN - eth0), other is 1Gbps (which I'd like to use for internet-only - enp0s25).
What ...
0
votes
0
answers
47
views
Wifi Connection does not work anymore over the night when Laptop was locked and has a low power
here is the journal of the NetworkManager:
Mar 04 12:59:02 david-ThinkPad-E15-Gen-4 NetworkManager[699]: <info> [1709553542.1224] device (wlp2s0): Activation: successful, device activated.
Mar ...
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0
votes
0
answers
27
views
Internet adapter don't work properly with different subnet masks in a multi adapter PC
I'm having some troubles trying to config a triple internet adapter configuration in my 'home made NAS server', aka a old computer like a server, using Ubuntu desktop 22.04.4 with a SAMBA share for my ...
0
votes
0
answers
145
views
Ubuntu 22.04 wifi connection is lost every x minutes
A week or two ago my wifi started losing the connection every 10-20 minutes. As far as I am aware I did not do any updates or anything prior to this. I have tried all sorts of solutions found online, ...
- 101
0
votes
0
answers
82
views
Issue with dual-NIC clients and netplan swapping ethernet interfaces
Background: 1500+ stations running Ubuntu Server + ubuntu-desktop-minimal, most are still on 20.04, new stations are all deployed with 22.04 (with a ubuntu-desktop-minimal --no-install-recommends flag ...
- 11
0
votes
0
answers
34
views
No 5Ghz detected and wifi connection "expires" but keeping a terminal pinging an address keeps the connection alive
My problem is two-fold, and I think they might be related:
On the "select network" tab, I only see 2.4Ghz networks, however my router has the typical 2.4 and 5ghz variant. I much prefer the ...
- 1
1
vote
0
answers
161
views
Only IPv6 Link Local Address after Ubuntu update
Since recently running a software update on my Kubuntu laptop, I only have a Link Local address assigned for IPv6. The connection GUI IPv6 configuration looks normal and identical to my working ...
- 11
0
votes
0
answers
72
views
Ubuntu 22.04 unable to use JetBlue inflight wifi
I have Ubuntu 22.04.3 running on an Asus Zenbook, exact model UX390UAK. My wifi at home and in coffee shops works fine but on every JetBlue flight I take I'm unable to use their inflight wifi (called ...
- 101
0
votes
0
answers
73
views
Simple eth0 config not working
I am a network guy but I am trying to set up a syslog and snmp server in gns3 using an Ubuntu appliance:
Linux Toolbox-1 5.15.0-91-generic #101~20.04.1-Ubuntu SMP Thu Nov 16 14:22:28 UTC 2023 x86_64 ...
0
votes
1
answer
110
views
DNS servers and public hotspots - 25% of them fail and solution is hard to find
At about 25% of random wifi hotspots I have no trouble connecting with my phone, but my linux does not connect. I tried everything in this post.
nslookup google.com does not work
➜ ~ nslookup google....
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answers
92
views
Ubuntu server cant ping outside network &| DNS (Temporary failure in name resolution)
My network on the server is not working, help much appreciated
default via 192.168.50.1 dev eno1 proto static
172.17.0.0/16 dev docker0 proto kernel scope link src 172.17.0.1 linkdown
192.168.50.0/...
- 1
0
votes
0
answers
25
views
gateway is not pingable /etc/networ/interfaces
I have a raspberry pi and modem connected to the network. I add the following lines to /etc/network/interfaces
source-directory /etc/network/interfaces.d/*
auto eth0
iface eth0 inet static
...
- 1
0
votes
0
answers
75
views
Impossible to make IP static - SOLVED
I may be had an upgrade problem from Ubuntu 20.04 to 22.04 that I can't solve.
My IP was before static at 192.168.0.100 on the "ens1" interface, but the interface have been set to "...
- 1
0
votes
1
answer
271
views
What is wlp2s0 and why is its state listed as disconnected?
What is wlp2s0 and why is its state listed as disconnected?
user@userserver:/home/user# nmcli device status
DEVICE TYPE STATE CONNECTION
wlp2s0 wifi ...
- 1