Questions tagged [network-interface]
hardware (or its representation by software) that connects a computing device (host) to a computer network (net)
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Is it a good idea to modify linux driver for asix ax88279(without data sheet) to receive hardware time stamps for every ethernet packet
I was searching for USB to Ethernet Adapter that supports PTP with an external clock and also is able to h/w time stamp NON PTP Packets with its own clock. We need this for capturing packets with high ...
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after putting wireless card in monitor mode, I cannot get available wifi
I am aware that in monitor mode, you might be get disconnected from the internet. You wont be able to access to the internet inside the monitor mode because network manager stops. so I restart it:
...
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How to get the a network adapter working with Fedora 6 on VMware Workstation?
I am experimenting with older versions of Linux in VMware. RHEL5 detects my virtual network adapter just fine, but Fedora 6 does not. I thought that RHEL5 was based on Fedora 6? I have tried various ...
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Cannot connect to wired internet through USB-C hub
I have a laptop connected to a Thinkpad Dock which has an Ethernet jack.
The laptop is running Fedora 40 KDE.
Every time it tries to connect it says "IP configuration was unavailable.".
I ...
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How to determine from the lspci output how cards and how many ports are on a card?
I need to write a script to count how many 2 or 4 port HBA cards we have in each of our servers.
I'm running lspci on each of the servers, however, none of the documents I've read so far is telling me ...
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How can I reduce power consumption of realtek ethernet device?
I have a laptop with debian 12 and the Realtek Ethernet Controller consumes around 10W according to powertop:
Power est. Usage Events/s Category Description
11.9 W 0....
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FortiClient VPN keeps crashing my computer (Linux)
FortiClient VPN that I use at work keeps crashing/freezing my computer, forcing me to hold down the power button and restart.
If I click SAML Login to connect to the VPN via FortiClient GUI, it will ...
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Why is my wireless network interface not being recognized?
My wireless network interface is not recognized by wpa_supplicant, ip link show, ifconfig -a, and more. This issue persists on my Gentoo Linux installation and an Arch live environment. The interface ...
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Router configuration. Unable to Connect to Hostapd WiFi Network
I have set up a wireless network using hostapd on my Banana Pi R3 router running Ubuntu 22.04.
hostapd configuration
$ sudo cat /etc/hostapd/hostapd_wlan0_gemma.conf
# hostapd configuration file
...
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Ping from eth0 to eth1
My computer has two network interfaces eth0 and eth1 connected directly with an Ethernet cable. I want to test if these adapters are broken. So, I run
# ifconfig eth0 192.168.0.1
# ifconfig eth1 192....
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Network Configuration - Hostapd Fails to Start - nl80211 Driver Initialization Failed
I would like to create a wireless network using my Banana Pi R3 router running Ubuntu 22.04 OS.
This is the configuration file that I am using:
userk@glutamate:~$ sudo cat /etc/hostapd/...
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4G modems allowing to set a higher TX output power
Does anyone know of a Linux-compatible 4G/LTE modem (USB stick or otherwise) which allows setting a higher TX output power that the standard +23dbm?
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How to force server to use specific network interface for connecting to the server itself?
Context
I'm setting up a server that acts as a central logging collector. The logs are sent via rsyslog to a Fluentd Docker container, and I need it to also collect logs generated by the log collector ...
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Formulate systemd .link file as plain udev rule or rename network interface without mac address
Due to hardware reasons, we have to rename our network interfaces. Because we have to do that on all our boards, for which we do not know the mac address, we have to do it using the id-path or driver.
...
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Installing network controller drivers
After my laptop (82EY IdeaPad Gaming 3 15ARH05) froze I have rebooted it, but neither my bluetooth nor my wifi were working. After copy-pasting commands from stackoverflow (a classic :P) I've managed ...
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No internet connection (both ethernet & wifi) after 24.04 upgrade
I have just updated Ubuntu 24.04 LTS on my laptop, and I seem to have internet problems. After both (ethernet & wifi) working in the previous version, I have no internet connection through wifi or ...
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Routing problem with ethernet cross-over network
192.168.86.0 (1Gb switch)
-------------------------
/\ /\
| |
==========...
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Routing external network traffic to a service that only listens on loopback
I'm running protonmail-bridge on a server on my home network, and I'd like to have several other machines utilize it as their IMAP/SMTP server without having to run duplicate copies of the bridge ...
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How to bring up an SR-IOV interface in a reliable way?
I would like to configure a single SR-IOV VF on a network interface. I have it working using the config listed below, however if I attempt to bring up the VF too soon after the PF, I get an error due ...
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SLAAC and SLAAC+DHCPv6 configuration using udhcp6
I am working on an embedded system and it uses udhcpc6 as its DHCPv6 client.
If I set an interface to 'dhcp' in the /etc/network/interfaces file, udhcp and udhcp6 automatically start.
I then connect ...
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How to record packet/frames data without a pcap header
I'm trying to capture raw/binary Ethernet traffic from my interface, so I can parse it using C. I don't want to parse any PCAP headers. I would prefer without the preamble and end bytes, but it's okay ...
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When usinga VRF together with a network namespace, I cannot ping the network namespace if the address assigned to it is already assigned in the host
My host has a network interface with gateway with 192.168.1.1 as address; the local address of this interface is 192.168.1.5. It's ok, a common network setup.
I tried to set up a VRF (virtual routing ...
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ifdown: interface end0 not configured. RTNETLINK answers: File exists. ifup: interface end0 already configured when setting static and DHCP interface
In a device with Debian BookWorm 12.5, I want to enable and disable a static IP using a Node application at runtime. The /etc/network/interfaces is the following :
auto lo
iface lo inet loopback
...
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creating and activating network interface from command line
in RHEL-8.10 or later if it matters,
I only know how to configure a functional network interface from the GUI interface... from Applications - System Tools - Settings - Network
When Network Manager is ...
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How to check Network Speed of specific Interface
I could test using IPERF linux Utility. But I want to specifically send/receive data on particular interface. Is there any way to do that?
I tried using iperf -c server_ip -B {IP_address of my ...
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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 ...
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2
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864
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Binding to an IP address on an interface that comes and goes
I have an ap0 interface configured for systemd-networkd which is designed to be enabled/disabled dynamically by an application. I would like this same application to bind to an IP address associated ...
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How is the namespace able to communicate with eth0 without NAT here
I was following this tutorial https://github.com/faysalmehedi/linux-network-namespaces-hands-on
I had to use this command so that our ns1 namespace can talk to eth0, where 192.168.1.1 is the IP ...
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Efficient way to get IPs attached to a specific interface by index / if_index
I am interested in getting the associated IPs with an interface, but by if_index, because all I actually have is an ipi6_ifindex from IPV6_PKTINFO / IPV6_RECVPKTINFO. I could use getifaddrs but, that ...
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Cannot add a tunnel to /etc/network/interfaces
Note:
I already checked this question and this question. The solution of the former is not relevant to my problem and the latter does not have any answers.
I have a basic VPS from aeza.net. When I ...
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What is a port?
I have been running an Apache web server for numerous years and have been using ports as a medium to serve requests.
Recently, I began using Unix sockets to serve MySQL requests. The function of Unix ...
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StrongSwan VPN Interface Issue
I need help understanding interfaces in Linux. I set up a StrongSwan VPN. The client asked for a specific subnet so I created a virtual interface called eth0:1. The LAN interface is eth1.
In the ipsec....
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Limiting a process to only allowed to use specified network interface
I have binary program named wstunnel.
That program has no option to specify outgoing traffic. By default it will use ens3. I expect the program will use warp interface.
I'm not sure iptables can solve ...
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Kernel headers for nic missing
I'm hoping there is a way to repair my linux env. I'm using Zorin but it's ubuntu under the hood. I never really had issue with the OS but after letting it sit for a month the network just quit. I ...
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how to add multiple interfaces in `/etc/hosts.allow` file?
SSH is listening on all the available 10 Ethernet interfaces in my system. I have tested using nc 160.49.198.97 22 command in Linux. To allow only particular interface and block others, i have created ...
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NAT router with private IP towards ISP and public IP on the second interface, localhost traffic problem
I need help with the following network and router. Under emergency conditions, I received the following network. The router (Ubuntu) has two interfaces and a DNS function. The private address on the ...
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USB Wireless Adapter not showing except in "lsusb"
I've been helping my friend troubleshoot this issue and can't find a solution:
He's trying to install Cinnamon.
He has a USB wireless adapter with the brand name "Foktech".
The adapter isn't ...
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Connecting two network namespaces over a bridge
I'm trying to make one network namespace to be able to ping another namespace via a bridge.
Here are the commands I'm executing:
# create two namespaces
ip netns add ns0
ip netns add ns1
# create a ...
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Unable to Connect to Internet After Deleting NetworkManager on Artix Linux
I recently deleted NetworkManager from my Artix Linux system running Runit, and now I'm unable to connect to the internet. I've tried several solutions but haven't been successful. Here's what I've ...
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What causes Linux to be unable to share WiFi, while Windows can?
When I boot up Windows on my dual-boot laptop, it is trivially easy to share my WiFi connection with other device(s), by simply going to the hotspot settings and enabling the hotspot. This does not ...
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Virtual network interface and route(s) to bypass VPN
I'm frequently connected to a system-wide VPN which I need to bypass for certain applications. On my home network I currently run a SOCKS proxy on another box which I use, for example, in a separate &...
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Configure two network cards persistently
I have two NICs and want to set the system up so the second one is the main/default one.
First one is a 1Gb unit and its built into.
The second one which is a 2.5gb NIC is attached over USB3, this ...
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QEMU - Bridge networking does not work on Debian Bookworm guest on M1 Pro host
I have a Macbook Pro M1 Pro host running a Ubuntu and Debian guests on UTM. The Debian guest is unable to connect to the internet if I use anything but emulated VLAN as the network setting. This is ...
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Packet forwarding from dual stack interface to localhost
I have a linux SUSE host which has both ipv4 and v6 enabled, below are the interfaces:- eth0,app,eth1 however the default route is available for ipv4 via eth0. Kubernetes is running on this host(...
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Debian 11 DHCP Configuration
I am having trouble configuring an interface to use DHCP in Debian 11. Thus, I have my static attempt in /etc/network/interfaces like this:
source /etc/network/interfaces.d/*
auto lo
iface lo inet ...
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How to reset status of a network adapter before assigning the name in a udev ruleset?
Part 4 of the problem with the usb3 nic interfaces after debian 6.1.0-20 kernel update.
See the other posts here:
Debian 12 - All of sudden my USB3 Lan adapter get assigned random mac address each ...
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Use usb path of an usb nic address in udev rules in order to assign an interface name instead of mac address
Related to:
Debian 12 - All of sudden my USB3 Lan adapter get assigned random mac address each reboot
Use parrent attribute "serial" in UDEV configuration to assign lan interface another ...
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Use parrent attribute "serial" in UDEV configuration to assign lan interface another name instead of relying on the mac address
Given this kernel problem awaiting to be fixed and that randomly assign mac address to this usb3 lan adapters: Debian 12 - All of sudden my USB3 Lan adapter get assigned random mac address each reboot
...
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Virtual interface pair forwarding packets to each other
The goal is very simple: anything sent to pair1, as outgoing packet, should appear on pair0 as an incoming packet and vice versa. I am thinking on a layer3-only, virtual interface now.
tun could do ...
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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) ...
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