Questions tagged [ethernet]

refers to the wired style to connect a bunch computers or a way to connect to such network. This tag is for both software and hardware part of this issue.

Filter by
Sorted by
Tagged with
0
votes
0answers
35 views

High load when Ethernet cable is unplugged

I'm building a system image with v4.19.106 kernel and BusyBox for BeagleBone Black using buildroot 2020.02. If I boot the board from the resulting SD card, I see a strange behaviour: system load stays ...
0
votes
1answer
26 views

Sharing (wifi) internet through ethernet interface

I want to connect two devices, the first is a laptop with ubuntu (connected to internet via wifi), and the second one is a device with a distro linux compiled with yocto. These two devices are ...
0
votes
1answer
19 views

No LAN-connection - how to diagnose possible hardware problem

My oldish desktop PC, running stable Debian, won't connect to LAN anymore. Since other computers in the same network don't have this problem (even using the same cable) I strongly suspect a hardware ...
0
votes
0answers
20 views

Pinging default gateway on a Linux virtual machine

I have two question about the network. I started to ping my router from my Linux virtual machine and I have intercepted these ICMP frames. I noticed that the destination MAC address is not my router ...
0
votes
0answers
11 views

Red icon for wired ethernet in Ubuntu

Recently I began to observe the following scenario: After the Kubuntu has booted the icon for wired ethernet is red. And there is not "Connect" menu for the corresponding connection in network ...
1
vote
1answer
39 views

Ethernet issues

I can't get my RTL8111F Realtek ethernet embed chip to work like it should.I sincerely have no idea what to do now. https://www.realtek.com/en/products/communications-network-ics/item/rtl8111f ...
1
vote
0answers
25 views

t490s missing Ethernet (not listed in lspci)

I have t490s laptop which has Wifi and Ethernet. But when I do lspci, there is no Ethernet there, just the Wifi card and also NetworkManager doesn't connect when I plug in rj45 to Ethernet adapter. I ...
1
vote
0answers
17 views

mdev doesn't seem to be working on reboot

Our Linux Kernel is 3.10 running on an embedded mips processor with busybox. The init script has - echo "/sbin/mdev" > /proc/sys/kernel/hotplug mdev -s We have a rule to rename a network ...
-1
votes
1answer
35 views

Can “dumb” ethernet hub device be used for breaking security on Ethernet cable connection? [closed]

Many people will still know about those old ethernet "hub"-devices - also called "dumb" device or "Ethernet signal concentrator". Did anyone ever try to "listen to ANY traffic" on such port through an ...
1
vote
0answers
17 views

Tuntap interface odd behavior

I have a program that uses tapcfg to set up a tuntap interface and the interface seems to get setup correctly on the endpoint address I specify which is 169.253.2.100. I also set up the src address to ...
1
vote
0answers
247 views

device not accepting address 18, error -71

I am using a USB to ethernet converter to connect my laptop to a raspberry pi. But the kernel log shows USB: device descriptor read/64, error -71 I have used this device previously without any ...
0
votes
1answer
44 views

Internet Connection slow with Linux

I have a problem with my new internet connection. This is a symmetric 500Mbs connection but i only get 50M in my linux computer (fedora 30). In windows I get 500Mb for up and down with other computer. ...
0
votes
1answer
151 views

Add Eth0 but there is LO and ENS160

I want to add static Ip to ubunto server , but I can not . when I use " ip addr" : and there is no "network" service . how can I setup static IP ? I am beginner at linux, please guide me A-Z thanks ...
1
vote
1answer
81 views

ethtool doesn't change the network speed in pre-up

I want to set the network speed so I created a script in /etc/network/if-pre-up.d/eth-tool: #!/bin/sh ethtool eth0 -s speed 10 duplex full autoneg off I set the execution permission, but on boot the ...
0
votes
0answers
21 views

Ethtool not changing Subsystem-ID for Intel X550T

I was able to changed SUBID's of intel X540AT in the past using ethtool without problems, but now that I'm moving to a board with a X550T when I use the code (modified for the desired device ID): ...
0
votes
0answers
15 views

Arch Installation PEAP Ethernet authentication issue

I am trying to install Arch Linux but can't get internet to work. My uni uses PEAP and MSCHAPV2 for ethernet but I have trouble authenticating with netctl and wpa_supplicant. Mobile tethering doesn't ...
0
votes
0answers
19 views

ntuple not working for multicast MAC address

Setup: Two peer-to-peer PCs installed with Debian 10.2 I am running an application in a PC which continuously transmit Ethernet packets to a multicast MAC address (01:00:5E:7F:00:02). In the second ...
0
votes
0answers
9 views

Creating a VPN based on TAP devices - no response to i.e. `ping`

I am trying to build a L2 VPN with Go for GNU/Linux (source is on GitHub). It reads all ethernet frames from a TAP device and sends them over TCP to a destination, which in turn writes it to it's TAP ...
1
vote
0answers
117 views

Ethernet and Wi-fi don't work Linux Mint 19.2

I just installed Linux Mint (first time using Linux) on my HP G7 255. I don't have experience with programming or Linux in general, but for over an hour I can't connect to the internet. I have to say ...
0
votes
0answers
140 views

802.1x wired authentication failed

I have this problem: I live in a university dorm room with an ethernet port because the campus wifi doesn't reach. So, together with the network administrator that was on board with this, I used an ...
0
votes
1answer
42 views

Traffic into lo vs eth, why might I be seeing only half the traffic on lo compared to eth?

I am forwarding traffic to ports on eth0 and lo. For the same traffic at the same ports and different ports, when I do a tcpdump and count the packets, for time t, I only see about half the number of ...
0
votes
0answers
25 views

Wake on lan with only two devices on the network

I am trying to make wake-on-lan work with one device I am connected to directly. I have enabled the feature in the BIOS, and tried multiple times to use wakeonlan with it. Because there are only two ...
1
vote
1answer
23 views

Use and set a default ethernet card for external network/internet (WAN) access

I'm running an Ubuntu PC with 2 network cards: An external USB to ethernet card, eth1 Built in ethernet NIC, eth0 I have eth1 assigned a static IP from the admin and intend to use it as the ...
0
votes
0answers
19 views

Linux: One interface receive or send both taged and untaged traffic

I want to configure a virtual interface to send and receive the traffic with a VLAN-tag of 3000. And configure other virtual interfaces to send and receive the Ethernet traffic without any VLAN-tag. ...
0
votes
0answers
529 views

How to change the block size in tftp server in order to send the large file & optimize the transmission speed

I have installed the TFTP client application by following the below link: https://askubuntu.com/questions/201505/how-do-i-install-and-run-a-tftp-server By default, the block size of the TFTP packet ...
1
vote
1answer
107 views

bring back eth0, consistent network device naming

I ran into a software licensing problem where in RHEL 7.x which now uses consistent network device naming and or biosdevname and or predictable network interface names. Software did not work having ...
0
votes
0answers
35 views

Ubuntu: randomly no internet access

Lately my Ubuntu 18.04 server randomly loses internet access about twice a day which can only be resolved by rebooting it. I have written a script that detects when this happens, copies the syslog and ...
1
vote
0answers
35 views

Ehternet LAN not working at full speed

I have a PC and a Laptop connected with a ethernet cable. Using ethtool, i found that my speed is 1000Mb/s which is 125MB/s. But, when i am transferring 6GB file i get ~30MB/sec speed. How do i ...
2
votes
1answer
2k views

How to get maximum supported MTU size for interface?

I'm trying to find a way to check if nic supporting a specific MTU size or not without trying to set it first (actually, I want to find the theoretical maximum MTU on all interfaces on all my servers)....
0
votes
1answer
71 views

Routing zeroconf interfaces

Please excuse the long description here, but I think it's worth explaining the setup before asking the question: I have 2 usb Ethernet devices connected to my machine (debian) which configure ...
1
vote
0answers
35 views

Arch Linux Ethernet less than 1ko/s

Since some days, my Ethernet connection is less than 1ko/s, same for Wi-Fi. Here's enp0s10 (result of ip addr): enp0s10: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group ...
0
votes
0answers
40 views

No Internet access through Ethernet with Linux Kernel 4.14

I am upgrading my custom board which uses a Cyclone V SoCFPGA from linux 3.10-ltsi to linux 4.14.73-ltsi and I am having difficulties in getting it connected to the internet. It seems to be a network ...
0
votes
1answer
58 views

Ethernet not working after removing GPU

So, I am having an issue where my Ubuntu Server (v18.04.3) no longer wants to connect to the internet. It was working fine before I took out my gpu to sell. I have googled to my hearts content and ...
2
votes
0answers
78 views

How to estimate ethernet cable length?

Windows control panel has a feature to estimate the length of ethernet cable between the computer and the router. Is there a similar command in Linux? Cable Length: Displays the approximate length ...
1
vote
1answer
209 views

Ethernet router not working on Ubuntu 18.04 system

I have an Ethernet router that is not working on Ubuntu 18.04. The Ethernet connection did not work on the installation media, so I figure it can’t be the Ubuntu installation. Different ports don’t ...
3
votes
1answer
2k views

Bridged interfaces and VLAN tags

I'm trying to set up a system that joins an untagged Ethernet network to a TAP tunnel, adding a VLAN tag as the traffic moves to the tunnel. So far I have: eth0 - the physical Ethernet interface ...
0
votes
1answer
462 views

USB-C Hub Ethernet Not Working

Today I installed Ubuntu 18.04.3 on a Google Pixel Chromebook (2015) using the MrChromebox firmware script. The installation went well but there seems to be a problem with my USB-C Hub with ethernet ...
0
votes
0answers
9 views

not get option for “address of network interface you want open vpn listening to” while configuring open vpn

by using this command $ sudo ./openvpn-install.sh first option to configure ip address of network interface for open vpn is not offered to me. i directly start below this option. why this option is ...
0
votes
1answer
27 views

ip address validation for setting up open vps

I am following a tutorial to setup OpenVPN: To find and note down your IP address use this command ip a show eth0 and get result inet 172.26.6.74/20 brd 172.26.15.255 scope global eth0 however ...
0
votes
1answer
269 views

Connman network configuration for default interface

I have a BeagleBone Green board running Debian. It uses Connman as the network manager. The configuration file should be /etc/connman/main.conf however this doesn't exist. I have two active network ...
2
votes
2answers
635 views

What is the systemd-native way to manage NIC ring buffer sizes before bonded interfaces are set up?

Managing NIC ring buffer sizes with ethtool is simple, for example: ethtool -G eth0 rx 4096 tx 4096 (Or replace eth0 with whatever interface you need to manage.) Doing this live is easy. Trouble ...
0
votes
1answer
692 views

Connect printer to pc directly with an ethernet cable

I have a home network where ip addresses are assigned with DHCP. I want to connect an HP Color Laserjet 3600n to one of my pc's directly through an ethernet cable and not via my router. The PC has one ...
1
vote
1answer
365 views

Debian 10 intel i211 LAN not working

I have a newly built computer with MSI MEG X399 CREATION Motherboard, which includes two Ethernet ports with Intel i211 Gigabit Ethernet. I am running Debian 10, but the Ethernet doesn't work. I can't ...
1
vote
0answers
54 views

Connecting to one Ethernet connection disconnects from the other (Debian Buster)

I am running Debian Buster with GNOME on the HP-AY554TU which has the RTL8101/2/6E Ethernet controller and an RTL8723BE wireless card. I have installed the latest firmware-realtek package using apt. ...
1
vote
1answer
49 views

dnsmasq as dhcp server configuration for Ethernet

I'm trying to configure dnsmasq as dhcp server on CentOS 7 minimal installation. My network consists of wi-fi AP, Ethernet, Bluetooth PAN and bridge called common-bridge which serves as master for ...
0
votes
0answers
103 views

How do I create an ethernet device file in unix - debian based embedded systems?

In my root file system, I can see that I have a directory /sys/class/net/eth0/. However, I want to create another interface /sys/class/net/eth1 and /sys/class/net/eth2. How can I do so? I am ...
1
vote
1answer
1k views

Network Manager unable to connect to network (Debian 10 / Kernel 4.19)

I switched my whole desktop-setup from windows to GNU/Linux + Debian 10. I am able to run the debian netinstaller and connect the mainboard for internet-software-updates. But whenever I got the full ...
1
vote
0answers
93 views

Identifying physical network devices using /sys/class/net/<iface>

I wanted to know if there is a way to differentiate physical and virtual network devices. ip a doesn't have an option. So I am trying /sys/class/net/<iface>. There are 2 attributes ...
1
vote
0answers
131 views

Ethernet connection keeps reconnecting on Manjaro Linux

I am using 5.1.18-1-MANJARO with KDE Plasma version 5.16.3 Since last update using Octopi I am facing this issue of Ethernet reconnection. sudo modprobe r8169 sudo modprobe r8168 I have tried ...
3
votes
2answers
1k views

Ethernet to USB adapter on Linux

I've recently bought an Ethernet to USB adapter. When I plug this into my computer running Linux (Ubuntu in my case) , this just works automatically, and I can see an internet connection over this ...

1
2 3 4 5
11