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Questions tagged [network-interface]

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hardware (or its representation by software) that connects a computing device (host) to a computer network (net)

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I have a network device (USB cable modem) connected to a Linux laptop via USB port: is it possible to access underlying OS file system (eCos real-time OS) running on the modem via USB port? I tried to ...
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I am attempting to install the driver for the TX401 10G NIC. I have the card installed in the computer and running lspci lists the device: 09:00.0 Ethernet controller: Aquantia Corp. AQtion AQC113 ...
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I have a SBC and I configured it to have 1 AP and 1 Station mode at the same time on my wifi module as below. Hostapd creates the access point for the interface wlan0 Interface wlan0_sta is created ...
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I have a Raspberry Pi 4 installed. OS: Debian 12 Bookworm Network Adapter: wlan0 I have installed Pi-Hole and would like to use it with my other devices. I will not be using DHCP. I have only changed ...
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I do not know before hand which network provider's SIM card is going to be inserted into my device, so my current method is to just have a python script create multiple connections while iterating ...
Rahul's user avatar
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I have a Raspberry Pi OS Lite system installed. It has the following interfaces available ip l ...
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As explained here in my own Q&A, reconsider the following scenario. A Linux host with a two port Linux bridge and two Linux guest VMs connected to it: the first bridge's port is connected to TAP ...
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Redhat-8 when configuring Network Settings has MTU set to automatic, which results in the traditional MTU=1500. Is this good or bad ? when.... ip -d link list reports a maxmtu value for your ...
ron's user avatar
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I need help with my network and router setup again. The router is running Ubuntu and has two interfaces with public IP addresses. We are renting a public IP address pool: 198.51.100.0/24. One external ...
E Malinowski's user avatar
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On my Linux Ubuntu I've a Linux bridge vnet0_6. You can check the mac address of each of the two interfaces attached to bridge's ports. root@eve-ng62:~# brctl show vnet0_6 bridge name bridge id ...
CarloC's user avatar
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I have a piece of software that requires at minimum 3 NICs on a host. The host only has 1 physical NIC. I need to create 2 virtual NICs so the software can be properly configured. These virtual NICs ...
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Linux' bond driver can be configured in 7 different link aggregation (LAG) modes (see https://en.wikipedia.org/wiki/Link_aggregation#Linux_drivers) Among them, there's mode 1 (active-backup) and mode ...
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I have 2 servers running proxmox on it.. both are in vswitch within hetzner. I am trying to get vms see each other which works fine but when I restart the service or reboot the server the connection ...
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Why depending on reboot the interfaces are renamed?! Same cards, same PCIe connector, network interface was enp3s0f0 and becomes enp3s0f0np0 for no reason. How to stop this non-sense? RHEL 8
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On a Docker host (which I have not set up; I am not very familiar wich Docker anyway) I noticed that I do not understand the interface names: 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc ...
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I am using a PC to control a robot at 1000Hz. My machine has Ubuntu 22.04 LTS with Linux 6.7 patched with PREEMPT_RT. The machine communicates with the robot via UDP trough a point-to-point Ethernet ...
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A class of Linux machines we maintain/build has up to 8 network interfaces, all but one aren't connected in the build phase. I'd like to speed up the build process by telling the initrd to ignore all ...
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I am using Veyon (client computers control software in local network) software on Pardus 23.2 (based debian 12). The network connection must be open for this program to work. However, some students ...
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I've installed qemu and virt manager on Arch but keep getting errors when installing virtual machines: There is no virtbr0 when running ip addr show when I first start my system, running virsh net-...
Boots's user avatar
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Recently after an upgrade to Debian Bookworm, my Wireless interface disappeared. i.e ip a shows only eth0 and lo I have been running the same hardware setup for about a year with the same Bookworm ...
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I have a hosted VPS running OpenBSD 7.6. It provides services on the private network (vio1) via requests sent from a reverse proxy on that network. The initial networking configuration was created by ...
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I'm new to macos world so maybe it is a silly question On all the *nix systems I have netbird installed I canfind a list of the network interfaces with a simple command ifconfig and the same on ...
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I have issue with cellular modem when I change MTU setting for mobile network interface. Setup: debian 11 default MTU size from mobile carrier 1430 require MTU size for northbound connection 1300 ...
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I have a situation very similar to this one where packets are being dropped after arriving on a tun0 interface. I confirmed with pwru that fib_validate_source is showing up before the packet gets ...
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In Linux, if I enable net.ipv4.tcp_l3mdev_accept with sysctl utility, I can reach all TCP ports listening at 0.0.0.0/[::] if there is a reachable IP inside a VRF. The listening point can belong to a ...
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I have been trying to setup a per-application filtering on a network interface using cgroups v2 but I can't. Here is an example using network namespaces and veth pairs: ip netns add somenetns ip link ...
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I have a lot of Linux boxes, mostly debian 10-11-12, where, on some of them (I'd say about 20% of them) the networking activity stops at fixed intervals (usually 45s). By "stops" I mean rx/...
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I have a Proxmox 8.3.2 hypervisor host, running several Linux VMs. Recently, I opted in to the Proxmox 6.11 kernels (Default is 6.8 kernels). Around that time, I noticed that after a reboot, the VMs ...
victorhooi's user avatar
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Context In my Debian Linux infrastructure, I manage several network interfaces with specific roles. Interface Role Subnet Description eth0 Public connection 192.0.2.0/24 Used for external public ...
Sushihash's user avatar
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I'm using a fresh minimal Ubuntu server 24.04.1 LTS install. I run these commands as root to set up networking and do some experiments: apt install -y netcat-traditional tcpdump inetutils-ping ip ...
Adrian's user avatar
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I use the networking through the networking.service and the /etc/network/interfaces configuration file on a Debian 12 system (as shown here). Problem I added a GPU and after rebooting, the computer ...
A.L's user avatar
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Linux version : Ubuntu 22.04 server minimal This box has 3 NIC cards and all those three NIC cards will be configured with static addresses by configuring in file /etc/netplan/00-installer-config.yaml ...
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OS: RHEL8. Goal: Forward SIP and RTP from VM main interface(ens192) to virtual manually created(ens100) For Testing I trying to forward only ICMP packets, but it's not working. (VM1) --icmp--> ...
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My ISP provides a pre-configured Asus router running Linaro GCC 4.6-2012.02 which connects to ONT (fibre box) via Ethernet cable. I can SSH into the router and see the WAN interface: 18: vlan10@eth0: &...
Greendrake's user avatar
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The question of how to create a static ipv6 but with advertised prefix has already been asked here (the solution appears to be set token), but I'd like to understand exactly what is happening in my ...
GaloisFan's user avatar
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I'm new to Linux, I'm using Linux Mint in dual-boot with Windows 11, and for some reason I can't use WiFi in Linux Mint. I've disabled Secure Boot in UEFI and Fast Startup in Windows 11, but it doesn'...
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In a Linux environment, Generic Receive Offload (GRO) helps improve network performance by merging multiple packets into a larger one, reducing CPU overhead. Now we want to control the maximum size of ...
Rohit Singh's user avatar
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Related question is here but the answer is not very intuitive, surely there is more standard method to configure NIC: How can I permanently associate tc qdisc commands with a particular interface? ...
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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 ...
Badri Tripathy's user avatar
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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: ...
Yilmaz's user avatar
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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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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 ...
tsorn's user avatar
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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 ...
Classified's user avatar
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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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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 ...
dacoder's user avatar
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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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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....
user634098's user avatar
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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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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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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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