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Questions tagged [network-interface]

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

0
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1answer
31 views

How to get network interfaces to show up without systemd? [on hold]

I'm trying to switch from systemd to runit. When I boot my computer with systemd as PID 1, my wireless card shows up in /sys/class/net. But when I boot with runit-init as PID 1, the only thing that ...
0
votes
1answer
20 views

USB WiFi card is not recognized as network interface

I have Lemaker Guitar board with Debian 8 based OS on it. The board has two network interfaces - ethernet and on-board WiFi chip. I need to use third interface - USB WiFi card. lsusb returns: Bus 001 ...
1
vote
1answer
48 views

how to print interface names only

i want to print interface names only from iwconfig command this is output of iwconfig: wlp2s0 IEEE 802.11 ESSID:"CoreFragment" Mode:Managed Frequency:2.442 GHz ...
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3answers
49 views

Why two network cards cannot work if configured for the same network, and could I fix this?

I have need to attach the two robotic devices to my computer, and for this I would like to use the two network cards connecting to these different pieces of hardware. Both devices happened to use the ...
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0answers
13 views

Adding second usb wifi interface [closed]

Leap 15. I have an internal Wi-Fi interface working fine. I want to add a USB interface with a different subnet. The USB is recognized as a Wi-Fi device in dmesg but I don't know how to start it. Can ...
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0answers
7 views

ethtool config precedence on physical interface or bond?

If I have a physical interface that (for example) has large-receive-offload configured to 'off' and that interface is part of a mode4 bond group that has large-receive-offload set to 'on' which will ...
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0answers
33 views

How do I connect to WiFi if it is grayed out? [duplicate]

Typically I can connect both the grayed out networks with an username and a password. However, on debian-based raspbian I have the problem. How can it be overcome?
3
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1answer
32 views

docker0 network interface is screwing up my network

I've installed docker on Ubuntu 16. Now I can no more connect to my wired network : ubuntu is using docker0 ethernet interface to connect to the network (the wifi interface still works) To resolve ...
0
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1answer
34 views

Use /30 netmask in Debian with bridged adapter in VirtualBox

I have Debian 9.6 installed in VirtualBox with bridged adapter. My question is, how to config my interfaces to have /30 netmask? I tried a lot a different things but I can't connect my host to the VM ...
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0answers
13 views

How to configure a p2p network on my secondary network interface?

On my home PC, I want to have my NAS drive connected to my secondary LAN port and the other LAN being connected to my router, what is the easiest way to do that? I can't get them to be active/UP at ...
0
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0answers
32 views

Debian changing eno0 to eth0 by itself

I have Proxmox on site, based on Debian 9.6. When freshly installed, I had 3 interfaces: eno0, enp0s1 and enp0s2, the network cable is plugged on the physical port marked 0 (zero) on the server, ...
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2answers
44 views

unknown network interface called “enx9cebe80718e1” [duplicate]

Answered in post below I have a network interface I don't recognize or understand. ip a s provides the following (sanitized) output: 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue ...
1
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0answers
41 views

how to identify network cards problem by linux commands [closed]

is it possible to perform sanity by useful Linux command on the network cards? for example lets say we installed new OS ( redhat 7.2 ) on new HW and each HW include 4 NIC cards how we can identify ...
4
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2answers
77 views

ip-tools vs old ifconfig

When after I change dhcp to static in network-scripts and then I restart servicesystemctl restart NetworkManager. The static ip settings suppose to be updated but it doesn't. so I try ip link set ...
1
vote
0answers
10 views

How to share W10 wifi with Beaglebone black running Debian 9.5 through USB?

I am trying to share Windows-10 wifi with Beaglebone-Black running Debian 9.5, via USB and get a "temporary failure in name resolution". The setup for this, usually consists of two steps (assuming ...
0
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1answer
16 views

Exclude interface when send ICMP ping

for build small linux application I need to check the internet connectivity of the system. But my box have multiple network interfaces with interfaced for backup internet connection. I need to do some ...
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0answers
13 views

Changing qdisc algorithm sysctl and tc

What qdisc is controlled via the tc command versus sysctl net.core.default_qdisc? Consider $ tc qdisc show dev eth2 qdisc mq 0: dev eth2 root $ sysctl net.core.default_qdisc net.core.default_qdisc ...
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0answers
24 views

Testing if iptables rules working on VirtualBox Linux VM

I have this specific set up I created to test squid cache intercept mode. I have created a VritualBox centos 7 SE linux VM on my mac. Disabled SE linux (set to Permissive) and disabled the firewall ...
13
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7answers
2k views

Naming convention standard for Ethernet and Wi-Fi interfaces on Linux machines

What is the naming convention standard for Ethernet and Wi-Fi interfaces on a Linux machine? We are developing a tool that should show only the Ethernet and Wi-Fi interfaces of the Linux machine and ...
1
vote
0answers
16 views

Cannot connect with IPV4 servers [closed]

IPV6 works fine, but IPV4 does not. I can: resolve dns names just fine (dont think its an dns issue) I am connected to the AP correctly (dont think its a connectivity issue) I have a IP address (...
2
votes
0answers
30 views

User specific hostname

I have a linux and bsd system with multiple (virtual) network interfaces. On those systems there are multiple users. Each user should use its own interface and therefore address. Is it possible to ...
2
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0answers
34 views

automatic mac address randomization on up-to-date Debian 9.5 with 4.18-amd64, Intel wifi 7260, NetworkManager, KDE/Networks fails?

I am trying to have a random mac address by default before I connect to any network. My results are ambiguous. 1. My approach 1.1) updated my box to the latest backported Debian 9.5 (as of 23 Oct, ...
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0answers
34 views

dmesg + Reset adapter - what is mean - is it problem

from the dmesg we get the following note - e1000 0000:02:01.0 eth12983746: Reset adapter is it mean that we have problem with eth card ? and because that adapter is restart ? [440924.709103] <...
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1answer
49 views

Why is it so hard to get your own local IP address [closed]

There are so many questions asking basically: how do I get my local IP address? None of answers are portable, they all seem like a hack. This seems like such a common need, but there are no good ...
2
votes
1answer
118 views

New Intel i350 NIC not detected by system, but appears in lspci - Possible Intel IGB issue?

I'm running into an issue where a new network card isn't being automatically detected by the OS. I recently purchased an Intel I350 gigabit network card. I have purchased this card before and I have ...
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0answers
66 views

Wireless USB Adapter TP Link TL-WN822N v5 not detected on Centos 7

I am trying to set up the TP-Link WN822N v5 on Centos 7. I am running CentOS Linux 7 with the kernel: Linux 3.10.0-327.28.3.el7.x86_64 But the wireless usb adapter does not get detected. When I ...
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votes
1answer
42 views

Does the virtual filesystem work on top of character devices and network subsystems?

Does the virtual filesystem work on top of character devices and network subsystems, or just on top of filesystems and block devices? Could you also explain a bit about in what sense "the VFS is ...
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0answers
29 views

huawei e800 expresscard modem not being recognized by manjaro

I'm trying to get a Huawei e800 expresscard / PCMCIA card modem to work in manjaro linux, but modemmanager is not detecting it at all, let alone let me configure a connection with it. The status light ...
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2answers
51 views

dhclient command does not allocate ip address to my interface

So I was trying to access a website through my browser but I couldn't. So I issued the ifconfig command to see if there was something wrong with the IP address I noticed that the interface enp0s3 ...
0
votes
1answer
43 views

linux & identify the interface name on remote machine

lets say I want to ping to some machine as from my machine - moon ping -c 1 master01 now I want to understand what is the interface name in master01 machine that get the packet from ping so how we ...
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0answers
35 views

WiFi connect remains stuck and then fails on “configuring interface”

I have a notebook with an Intel 7265 (Rev 61) WiFi chipset, on which I run Kubuntu 14.04 with a home-build 4.14 kernel. I also have a TrueOS 18.03 (FreeBSD 12 based) install on another partition. I'...
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1answer
39 views

How to find out the interface which is being used for internet?

I have multiple network interfaces and I am not sure which interface is being used for the internet connection. I tried the methods which are listed in the question How to find out which interface ...
0
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1answer
21 views

config ip adrress of a network interface through ubuntu terminal [duplicate]

I am trying to configure ip address of network interfaces through terminal in ubuntu systems. So far successfully changed the IP address and other things through editing the interface file in the ...
0
votes
1answer
18 views

How to await the result of setting an interface up (ip link set up)?

ip link set up eth0 is not blocking. After returning, its result is only visible in the system a few μ/msecs later, mostly accompanied by a kernel message of the device driver, like r8169 0000:25:00.0 ...
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0answers
55 views

Linux Interface RX error & rx_brb_discard counter higher

I am running CentOS 7.5 Linux and server is totally idle no in production but today i got alert stating interface eth error and when i check interface counter was very high but it stopped after that, ...
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0answers
43 views

/etc/network/interfaces as a symbolic link to file on another partition

I have multiple rootfs paritions, one marked for boot at a time. I want the network settings to persist no matter which rootfs i am booting from. For this reason i have created a separate partition ...
3
votes
2answers
196 views

What's the difference between `en0` and `eth0`? [duplicate]

What's the difference between en0 and eth0? In my CentOS 6 VM, there is list of network-scripts: [root@localhost /]# ls /etc/sysconfig/network-scripts/ ifcfg-en0 ifdown-ipv6 ifup ifup-...
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votes
1answer
33 views

Change default gateway & assigned IP via script

I need some pointing in the right direction as I've tried a lot of different things over the past few days without success. I'm new to using bash and linux in general. I'm trying to detect when the ...
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0answers
74 views

Bringing up interface en0: Device does not seem to be present, delaying initialization

This is my /etc/sysconfig/network-scripts/ifcfg-eth0 in my CentOS 6.9: code is : DEVICE=eth0 HWADDR=00:15:5D:E0:1C:02 TYPE=Ethernet UUID=xxxx ONBOOT=no NM_CONTROLLED=yes BOOTPROTO=static IPADDR=43....
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2answers
168 views

How set up link aggregation (bonding) in linux mint 19

I am using network-manager. I tried bonding my two wired connections eth0 and usb0, using GUI similar to nm-connection-editor (eth0 is connected to my router and usb0 is connected to cellphone). I can ...
3
votes
2answers
284 views

What cloned_interfaces does to interfaces in rc.conf?

I'm trying to understand what cloned_interfaces does in FreeBSD's rc.conf. Manual page says: cloned_interfaces: (str) Set to the list of clonable network interfaces to create on this host. Further ...
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votes
1answer
41 views

How does bind(2) choose a network device?

Background I'm looking to write kernel-space implementations of a non-IP network protocol and associated network device driver (non-ethernet hardware). I found some resources on developing the ...
3
votes
1answer
43 views

Which programs configure the network based on the settings in /etc/network/interfaces?

I have installed Stretch and I find that NetworkManager gets in my way more often than not, and I would rather familiarize myself with network interface administration at a lower level based on the ...
1
vote
1answer
297 views

NIC can not detect CentOS VMware

I have secondary network adapter on my VM (VMnet 10). I am running Centos 7. Now, I can't detect my second NIC. Here are my configurations: I know that my secondary adapter is ens37 depending on my ...
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0answers
61 views

Openstack instance packet drop on tap interface

I am seeing packet drops on openstack instance which is using qemu for hypervisor. I have noticed drops on TX interface and based on documentation I have increased txqueue length from 1000 to 10000 ...
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0answers
84 views

rx_drops_no_pbuf drops on Emulex Corporation OneConnect 10Gb NIC

I have noticed overrun on one of my HP server which has following nic [root@CentOS7 ~]# lspci | grep -i eth 03:00.0 Ethernet controller: Emulex Corporation OneConnect 10Gb NIC (be3) (rev 01) 03:00.1 ...
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0answers
76 views

USB_modeswitch, huawei 3531 and raspbian

I'm currently working on a project where I need to use a huawei 3531 as a 3G dongle for a connected device (still in progress ;)). But I have trouble to use it. I've made it work in the past, but ...
0
votes
1answer
31 views

Change outbound IP - centos

i have a server (linux/centos) and my default ip is: 111.111.111.111 so i bought another ip (ip failover) 222.222.222.222 if i visit in browser 111.111.111.111 or 222.222.222.222 its opening same ...
2
votes
1answer
36 views

Bad IP route after restart network

I would like to make a IP route persistent, but it disappears after a reboot or service restart. here my net conf : 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN qlen 1 ...
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vote
1answer
120 views

how to verify if MTU 9000 configured properly on all component

we want to test the network on all Linux machines after all machines and switches configured to MTU=9000 the reason for that is because inconsistent MTU configuration can cause huge problem so in ...