Skip to main content

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
0 answers
9 views

Pxeboot - how to set network interface speed?

I can successfully do a PXE boot but the initial load of initrd and kernel is very slow because it drops back to 100Mbit instead of Gigabit. (This probably means it is actually causing all sorts of ...
Max's user avatar
  • 1
0 votes
1 answer
62 views

How do I forward VLAN-tagged Ethernet frames through a Linux bridge between two physical Ethernet interfaces?

Background I am currently working on a device that uses a Beaglebone Black as the base board, and has a 3rd-party MAC/PHY attached to the breakout pins. Problem The desire is to forward all Ethernet ...
user25729276's user avatar
0 votes
0 answers
34 views

Why receiving TCP network packets require more memory bandwidth and CPU utilization than transmitting packets?

I am analyzing an ARM system with Linux kernel 5.15 running. I am running iperf3 to measure the network throughput between two ARM systems. Note that these are simulated systems and are loosely ...
sammy17's user avatar
  • 95
0 votes
0 answers
65 views

Realtek ethernet driver disabled both my ethernet and internet drivers without installing new ones

I have a Debian 12 system that I always connect with an ethernet cable. I saw that it wasn't running at its advertised speed (~100 Mb/s vs. 500Mb/s), so I tried to install its driver from the ...
none2's user avatar
  • 1
3 votes
1 answer
234 views

Debian 12 – All of a sudden my USB3 LAN adapter gets assigned random MAC address at each reboot

I have various small NUCs with attached on each one some of this USB3 LAN adapters (because the NUCs have only one Ethernet, so I added extra ones with USB3 adapters). You can see an image of the ...
user3450548's user avatar
  • 3,004
1 vote
1 answer
59 views

Is it possible to configure Ethertype DSA VLAN tagging on an Ethernet port that has a real PHY connection to the outside world?

I am working on an embedded system that will connect a processor running Linux to an Ethernet switch via a "conduit" Ethernet link (e.g. eth0) using the port-based Ethertype DSA (Marvell) ...
srl100's user avatar
  • 11
1 vote
1 answer
57 views

SSH hangs/disconnects unless using `-v` option

I have a raspberry pi setup. When connected over ethernet ssh sometimes hangs, but generally works. When connected over wifi ssh is extremely choppy (8/10 connections fail, if I connect it drops ...
scosman's user avatar
  • 111
1 vote
2 answers
376 views

Machine MAC address with Ubuntu on top of WSL2

Running Ubuntu 22.04.3 LTS on top of WSL2 Output of ifconfig: eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1492 inet 172.28.193.11 netmask 255.255.240.0 broadcast 172.28.207.255 ...
yossi-matkal's user avatar
2 votes
0 answers
158 views

Predictable network interface names with BusyBox

I want to map each hardware NIC to a specific linux network interface (ethX) persistently, as currently when an ethernet cable is reconnected, it picks an interface seemingly at random. This is ...
px-wgraj's user avatar
2 votes
1 answer
58 views

arptables not working with nmap

I'm trying to implement a way to prevent network scans from my notebook. One of the things I want is to allow arp request to specific hosts, like my gateway. I added some rules using arptables and ...
Alberto Pires's user avatar
0 votes
1 answer
61 views

Weird Internet disconnection issue on Linux and ethernet

I am using Ubuntu 23.10 and an ethernet connection to my router. However, sometimes during the day, my Internet connection gets "lost" for periods that can reach 1 hour sometimes. I can ...
Madno's user avatar
  • 175
0 votes
1 answer
77 views

Can’t use ethernet after removing kde-plasma on debian 12

Here are my system’ and interface’s details: After connecting ethernet cable to the laptop, running ping gives me ping: connect: Network is unreachable and with sudo apt update, I het could not ...
Naveen Reddy Marthala's user avatar
0 votes
1 answer
188 views

Setting PIN code for ZTE USB 4G Modem recognized as CDC Ethernet device in Linux

Currently facing an issue with setting the PIN code for a ZTE USB 4G modem on a Raspberry Pi 4 (running Rasbian Bookworm). The modem is recognized as a CDC Ethernet device (cdc_ether kernel module), ...
user3607022's user avatar
0 votes
0 answers
39 views

How to share my eth-wired internet from my pc to my eth-wired raspberry pi, non-wifi

I have a PC and RPI, both running debian. My PC has internet access via ethernet(not wifi), and I connect to my RPI with ssh via another ethernet from the PC to the RPI. The PC to RPI connection uses ...
raquel's user avatar
  • 11
0 votes
0 answers
21 views

Is it possible to create `active-backup` bond with Ethernet and Infiniband IPoIB interfaces?

Is it possible to create L3-level? bonding an Ethernet interface and an Infiniband IPoIB interface on Linux, with active-backup where the IPoIB one is the primary? For this, I have set the subnet ...
hurryman2212's user avatar
0 votes
0 answers
76 views

server does not retry dhcp after previously getting no dhcp offer

My server gets IP address from dhcp. Sometimes the dhcp server does not respond, and my server times out (no dhcp offer, sleeping) I thought, my server would re-try dhcp, but that does not happen. ...
Martin Vegter's user avatar
0 votes
0 answers
174 views

USB to Ethernet adapter configuration in Linux

I have a USB 3.0 to Gigabit Ethernet Network Adapter UE306. I want to connect my Arduino board which has RJ45 using that adapter to Ubuntu over USB to give internet access to Arduino board. I do not ...
ibrahimdanish's user avatar
17 votes
5 answers
5k views

Can I use two ethernet card to increase transfer speed between two linux OS in lan?

I have two computer, both with linux, which are currently connected to a router/switch via a 1000Mb/s ethernet port (installed in mb). This allows me to transfer data at max 120MB/s between two hosts. ...
user831634's user avatar
4 votes
3 answers
282 views

Linux networking not working after playing a game on Windows

I have this bizarre problem with my PC. Linux networking stops working after I play a game on Windows. Situation I have dual boot, Windows 10 for gaming and Manjaro linux for day-to-day use. I'm using ...
piotrekkr's user avatar
  • 569
0 votes
0 answers
44 views

DHCP server can not receive my client in virtual interface

I'm writing a DHCP server and my own client using socket in Python3. My client: def client(self): print("DHCP client is starting...\n") dest = ('<broadcast>', ...
anhbe58's user avatar
0 votes
0 answers
63 views

How to get consistent ethernet device numbering on a Raspberry pi?

I have a Raspberry pi 3B+ with a custom Yocto Linux image. I want the onboard Ethernet to be eth0 and a USB Ethernet dongle to be eth1 or something else such as usb_eth0. One pi consistently numbered ...
elechris's user avatar
1 vote
1 answer
1k views

Multiple NetworkManager connection profiles for the same ethernet interface not always work correctly

I'm using 3 NetworkManager connection profiles in a Linux distribution and all the connection profiles refer to the same ethernet interface: enp3s0. I'm using these connections to manage: the default ...
User051209's user avatar
1 vote
1 answer
680 views

Fedora 38: Can't use ethernet

I'm currently trying to switch to Fedora but cant get the communication through wired connection to work. I can't figure out what's wrong, from the computers side everything is fine, but I can't ...
timus's user avatar
  • 11
1 vote
1 answer
259 views

MAC address rewriting using tc

I am using tc to change the MAC address of incoming packets on a TAP interface (tap0) as follows where mac_org is the MAC address of a guest in a QEMU virtual machine and mac_new is a different MAC ...
qemvirt's user avatar
  • 13
0 votes
1 answer
244 views

I'm not able to connect to Internet using the eth0 network interface produced by the pugable usb to eth adapter

Let's make a jump in the past,coming back to the network configuration of the old ARM Chromebook model xe303c12. Today I've bought the "pugable usb to ethernet adapter" and yes,I think that ...
Marietto's user avatar
  • 549
0 votes
0 answers
802 views

Turning Ethernet port LED off in Linux

In linux I'm using "ip link" command to turn DOWN specific ethernet port on my PC. When doing this the port LED turn off for a bit then turn again ON (but the connection is still DOWN if I ...
Fabiano Taioli's user avatar
0 votes
1 answer
59 views

Wi-fi network device has Ethernet link layer

I'm capturing packets using Wireshark on my Macbook. Pinging some public IP (e.g., 8.8.8.8) shows the ICMP packets going out my en0 interface. In Wireshark's capture options, that interface is ...
Daniel Walker's user avatar
0 votes
0 answers
142 views

Gnome shows ethernet connected when cable is unplugged

I'm trying to connect to the internet on my Debian 12 laptop using my phone connection through an USB-C cable. When the cable is connected and the connection sharing is activated on the phone, the ...
runningwild's user avatar
0 votes
1 answer
102 views

Kernel panic on boot, only when ethernet adapter connected

Hardware: Late 2013 MacBook Pro Retina 16gb RAM, no swap space enabled aftermarket 2TB SSD Brand new Thunderbolt to Ethernet adapter Software: Fresh install of Ubuntu Server 22.04.3, with GNU/...
trainface's user avatar
2 votes
0 answers
56 views

How to cancel a packet scheduled for time-based transmission after it's enqueued?

I have a time-sensitive networking application I am writing that involves receiving individual Ethernet frames, and then sending the data onward in another Ethernet frame after a precise 1 second ...
AJMansfield's user avatar
0 votes
0 answers
140 views

Errors when trying to bring ethernet interface up on embedded Linux

I am trying to compile the Linux kernel (3.0.8, buildroot-gcc-12.3.0, ARMv7) to run on my IP camera. eth0 is not able to get up. At first, kernel boot just crashed at Starting network step: Unable to ...
hypers's user avatar
  • 101
0 votes
0 answers
25 views

Raspberry pi running arch linux connected to two different wan ports(wifi and ethernet) I want to disable intenet access and keep local access

I have a unique setup I think. I have a raspberry pi running pikvm. I have two internet connections at home (Xfinity and ATT): xfinity connected via --> ethernet port (MAIN) ATT connected vis --&...
ibsfusion's user avatar
2 votes
0 answers
121 views

Ubuntu wired ethernet can be detected but can't connect to any other divice with RX data transfer always zero

Platform CPU: RK3288 ARMv7 embedded processor Memory: 2GB NIC: RTL8211E chip on board OS: Ubuntu 14.04.1 LTS root@9tripod:~# uname -a Linux 9tripod 3.10.0 #26 SMP PREEMPT Sat Mar 4 17:06:44 CST 2017 ...
NeNe's user avatar
  • 21
0 votes
0 answers
65 views

Playing Music through Sonos Speaker connected to ETH Raspberry Pi

I have a Raspberry Pi Wifi-to-Ethernet bridge, and have a Sonos Symfonisk speaker plugged into the Ethernet output. In it's current configuration I can't play music through the speaker, is there a ...
cdubs's user avatar
  • 103
0 votes
0 answers
31 views

Router Cannot See MAC Address of Devices Behind RPi Bridge

I followed Option 1 (Same Subnet) of this tutorial to turn my Raspberry Pi into a WiFi-to-Ethernet Bridge. It works great, but the router cannot see the device connected behind the bridge as being ...
cdubs's user avatar
  • 103
0 votes
0 answers
40 views

Stablish uni-directional SFP network link

I am trying to establish a uni-directional Ethernet link where a singular fiber is used to transmit data to the receiver. The Rx of the transmit side and the Tx of the receive side are not physically ...
alireza sadeghpour's user avatar
0 votes
1 answer
74 views

debian bookworm - plugging in ethernet shuts off display

I recently migrated my ASUS thinpc (Ryzen 3 4300U) from bullseye to bookworm. I use a KVM switch (KCEVE 4 Ports KVM Switch) to share my external monitor, mouse and keyboard between this PC and my work ...
Rashmi M P's user avatar
0 votes
0 answers
184 views

Print entire 802.11 WiFi Ethernet frame header with tcpdump (or anything else)

I'm currently learning about WiFi Ethernet frames and want to sniff raw ethernet traffic from my laptop's WiFi adapter. Running sudo tcpdump -vvv -n -i wifi0 -e prints something like the following: ...
Some Name's user avatar
  • 265
0 votes
1 answer
136 views

How to find the parent network device for a PPPoE device

For a POINTOPOINT PPPoE ppp0 device in Linux, how to get the underlying ethernet device in a reliable way? I've looked in the output of ip -d link and in the /sys/class/net/ppp0 directory, but neither ...
Alex Stragies's user avatar
0 votes
1 answer
774 views

Can't have two network interface enabled at the same time?

Rocky Linux 8 X86-64 on a PC with two Ethernet interfaces, each connected to isolated switch hub, then connect to router. LAN1: 192.168.1.2/24 <--> Hub1 <--> 192.168.1.1 (Router port #1) ...
RichardLiu's user avatar
0 votes
0 answers
24 views

Connect wifi adapter to motherboard ethernet connection, same machine, linux

I just want to connect my wifi adapter to my ethernet adapter, plug the ethernet adapter (onboard) into a router, and share Internet with the wifi adapter through the router. Possible? Easy? I'm using ...
Brian's user avatar
  • 168
0 votes
1 answer
53 views

How to enable/disable NIC Rx

My computer has two Ethernet ports for receiving data, and each port has an open socket. The sender also has two Ethernet ports, and they are synchronizing and transmitting the same data. Based on my ...
raon's user avatar
  • 1
0 votes
0 answers
284 views

Cannot get DHCP lease through wireless-to-wired bridge

I am trying to bridge wlan0 and eth0 on a embedded board. That board is going to be connected to my home AP via wifi and I expect to connect my laptop to the wired leg of the bridge and have access to ...
Gabriel Antonio Santos Baez's user avatar
0 votes
0 answers
158 views

Wifi,Bluetooth ,Ethernet not working in Fedora 37,64bit

How to connect Bluetooth, Wi-Fi, Ethernet
BƦƖƓӇƬ's user avatar
0 votes
1 answer
2k views

netplan does not assign static ip to the eth0

I am configuring a PC network with netplan and the following configuration: only one ethernet device with MAC address 48:b0:2d:d3:d1:c4, and an USB-to-ethernet adapter. I need the ethernet device (...
adiego73's user avatar
1 vote
1 answer
118 views

I see only DHCP requests but not DHCP responses from "parallel" computer

I have two Raspberry Pies and one DHCP server connected to a switch. Raspi #2 is configured to do netboot. I am sitting on Raspi #1 and doing tcpdump 'ether host b8:27:eb:5d:4a:f6' -p -i eth0 -vv I ...
Dims's user avatar
  • 3,285
0 votes
0 answers
774 views

How to link usb ethernet adapter to the specific ethenet adapter in Linux Ubuntu

I connected 4 USB-to-Ethernet adapters to my machine which runs Ubuntu 20.04.5. When I check ifconfig, I see 5 network adapters, which is correct. eth0 is always native Ethernet adapter which ...
Peter's user avatar
  • 1
3 votes
1 answer
84 views

What are ARP hardware type 37, opcode 21 and protocol type 0x90bd?

I am currently testing netfilter / nftables / nft. As a starting point, I have made a ruleset that drops nearly everything in and out, and have written the rules so that every dropped packet is logged....
Binarus's user avatar
  • 3,430
1 vote
1 answer
914 views

Reading PHY MII registers beyond 0x1F

I am having some issues with a DP83826 PHY and therefore I want to read some configuration registers. I have used mdio-tool and mii-diag for it, but I just realized that I can only read the first 32 ...
ldd3's user avatar
  • 71
0 votes
1 answer
485 views

How to use 2 network interfaces simultaneously?

I want to use 2 network interfaces (enp7s0 and enp8s0) simultaneously on Ubuntu 22.04. Both has its own separate internet connection. My default is enp8s0 which I plugged the LAN cable in first. I ...
God of Money's user avatar

1
2 3 4 5
14