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

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How to permanently remove eth0.x in CentOS

I'm trying to remove eth0.x and keep eth0. While ifconfig lists both eth0.1 and eth0.500, I didn't find their configuration files /etc/sysconfig/network-scripts/ifcfg-eth0.x. I tried ifconfig eth0.1 ...
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22 views

CentOS: wrong network-scripts order for bridge

i created a new bridge in /etc/sysconfig/network-scripts/ifcfg-br0 and linked the real device in /etc/sysconfig/network-scripts/enp2s1 root@vhost ~ # journalctl -u network.service -- Logs begin at ...
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1answer
20 views

Disable Primary NIC but leave Virtual Nic tied to Primary NIC Active - Virtual_IP Troubles

I am having trouble setting up a Virtual/Floating IP. In this specific circumstance I am using Pacemaker+Corosync to manage just 2 Virtual IP's. One is internal and the other is external to our SIP ...
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24 views

can't get wifi link

I just put a fresh install of CentOs 7 on my laptop. I wanted to set up the wifi using the terminal so I was following these instructions: http://linuxcommando.blogspot.com.br/2013/10/how-to-connect-...
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36 views

Unable to change default bitrate of wireless network interface

I am trying to change the bitrate of my wireless nic (AR9565 driver: ath9k_htc) for experimentation purposes. I am running Ubuntu 14.04 LTS and my card details are as follows: wlan0 IEEE 802....
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1answer
15 views

Use network adapter in Kali Linux using vmbox?

I would like to use my network adapter from my laptop in kali linux. I tried changing the network settings inside vmbox but I can't get it to work. I am using oracle virtual machine. Kali linux is ...
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1answer
27 views

Bonding on centos

I have host that running OpenStack. For public access, there bonding (mode active/passive) on nic1 and nic2. Right now both connect at the same switch. Is it possible to connect different switch and ...
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28 views

configuring pppoe in Ubuntu 14.04

I have taken a broadband connection from G Broadband. I haven't opted for a router as I wanted the connection just for my laptop. So I am now connecting via lan cable. The G Broadband guy could not ...
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1answer
187 views

Intel Ethernet Connection I219-V not working under Linux on an ASUSPRO B laptop, e1000e driver reports: “The NVM Checksum Is Not Valid”

I have a problem with an ASUSPRO B8430UA laptop: when I boot it with Ubuntu 16.04 (or NixOS 16.03) the Ethernet port does not work. The driver used is e1000e, it reports: $ dmesg | grep e1000e [ ...
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37 views

Systemd networking service fails because of unknown interface

My problem is related to USB tethering and network interfaces. When I run ifconfig -a, normally I see 3 interfaces - loopback, WiFi and Ethernet. I have defined gateway, netmask and broadcast for ...
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1answer
50 views

Rotate IP outbound IP address in Ubuntu or CentOS

My OpenVZ VPS has two IPv4 and two IPv6 addresses: 23.54.xx.102 23.54.xx.103 2604:xxxx:1::xxxx:6x0b 2604:xxxx:1::xxxx:5x7c Now I want to rotate my outbound IP so that when I run any PHP, ruby or ...
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31 views

Ubuntu 14.04 server can't access local or external network from server

I have Ubuntu 14.04 development server that was upgraded from 12.04 a few months ago. It initially worked fine, but suddenly lost network capability. After some messing around and removing DHCP (set ...
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1answer
41 views

How to configure internet on old linux VM

I have downloaded the first version of Mendrake running kernel 2.0.35 for study purposes. I installed the system on a virtual machine (VirtualBox), i used SCSI virtual hard drive for compatibility &...
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27 views

USB network card dongle on CentOS 7(.2)

I've just started using a USB-to-gigabit-nic dongle on my CentOS 7.2 machine and it's giving me a headache. To get the NIC registered I constantly have to remove and re-insert the USB after each ...
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20 views

Bluetooth Tethering, no IPv4 adresse at interface bnep0

I want to tether my mobile internet from my smartphone (OnePlus One, Android) to my Laptop (Debian 8). I want achieve this without using external tools. At the arch wiki page (https://wiki.archlinux....
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72 views

How to do with “ndd” for get “ethtool” equivalent on Solaris

I've to restore a large file from a NAS backup on Solaris 10 ZFS. I'm using this following command: rsync -av user@xxx.xxx.xxx.xxx:from/NAS/files/system to/solaris/files/system And I've got this ...
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1answer
31 views

Use same IP for 2 Ethernet Adapters in different Physical networks

We have a Linux Panel with 2 Network Interfaces. On this Panel runs a software wich needs to comunicate to our devices in our network, and needs to be accessible from the customers network. One ...
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24 views

How to enable a PCI device if it is disabled

I have a remote PC with CentOS 6.5 installed. The problem is sometimes NIC doesn't boot up and this issue doesn't solve even after many reboots. but when I shutdown the machine completely, the card ...
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24 views

How Do I Effecively Restore /mnt Path After Network Outage?

Running ubuntu 14.04 where I have a mounted cifs network drive. This mount is where some crucial data is saved from which a consumer process accesses. My problem is when there is a network outage. ...
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44 views

Can detect but not connect to 5ghz?

One night I found out that I could no longer connect to my 5Ghz network. It happened rather suddenly. My fear is that it's a problem with the card, because I also cannot connect on Windows. I can see ...
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2answers
37 views

recognize which interface I using

On my laptop I've two interfaces (wlan0 and eth0), after conneted the wired, ifconfig show me "RUNNING" also in eth0. (both interfaces are in same network). /sbin/ifconfig wlan0 wlan0: flags=4163<...
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41 views

SoftIRQs and Fast Packet Processing on Linux network

I have been reading about performance tuning of Linux to get the fastest packet processing times when receiving financial market data. I see that when the NIC receives a packet, it puts it in memory ...
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2answers
66 views

Ping from subinterface

I have a sub-interface eth0:0 auto eth0:0 iface eth0:0 inet static address 192.168.2.96 netmask 255.255.255.0 gateway 192.168.2.1 and I try ping -I eth0:0 8.8.8.8 and I ...
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34 views

Does chipset determine if wifi card will be supported under linux?

I'm planning wifi card upgrade and I've decided to look for router targeted hardware because of better specs. I found MikroTik mPCI-E module that features Atheros AR9582. I also found that Linux ...
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1answer
60 views

Cant find package for wireless network card, Arch-linux

I'm trying to install the wireless driver for my network card. The Wireless Linux Wiki says that I need to install the b43 driver since my card is listed there. I'm on arch linux. I've installed it ...
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28 views

Why did the interface name of my wireless card change when I added a sound card?

Predictable network interface names are not supposed to change when hardware is added or removed. Isn't that the whole point of the naming scheme??? My wireless interface was named wlp3s0. I ...
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2answers
52 views

How to restart network in ubuntu server 14.04.04?

I tried using service network restart and /etc/init.d/networking restart, what command could I use now?
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24 views

Understanding NIC self test's with ethtool

The below is taken from a previous question: For starters you can use the tool ethtool to run your NIC's self tests. excerpt from man page ethtool -t|--test DEVNAME Execute adapter self test ...
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35 views

My network interface disappears from /run/network/ifstate

Here's the relevant parts of my interfaces configuration file: # grep -vP '^(#|$)' /etc/network/interfaces auto lo iface lo inet loopback auto eth0 iface eth0 inet static address 192.168.0.10/24 ...
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20 views

What would cause itermittent internet connectivity on my server?

I occasionally have trouble with an ubuntu VM I set up for testing developement work - it occasionally becomes inaccessible to ssh, can't connect to archive.ubuntu.com for updates, etc. It has two ...
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1answer
25 views

Unable to configure eth1

I installed Ubuntu 14.04 LTS 64 bit server version in a VM. I am using my own dhcp to configure the IP address. For my machine, I configured adapter 1 as NAT and adapter 2 as Host-only-adapter. The ...
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2answers
59 views

Get Wi-Fi interface device names

Similar to a previous question about finding network device names, I would like to get a (reliable) list of device names but just for Wi-Fi devices. So that it looks like the following depending on ...
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1answer
19 views

New network interface created after reboot - OEL 6

We do not remember the setting apply via network manager applet -Redhat6 - but after each reboot of the virtual machine, new network interface appear in network manager with no ip address no mac. This ...
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38 views

How can I destroy carp VHID

Hello after carp configuration on my IMS interface I see that I have also 2 INIT state vhid configured on EXT interface.How can I destroy this 2 vhids? Any suggestion? Thanks in advance. IMS: flags=...
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Wifi not working and interface not listed

I installed Chromium OS on a USB stick, and can't get wifi to work. It looks like the interface is missing. Here is the output of some commands: localhost / # ifconfig -a lo: flags=73<UP,LOOPBACK,...
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1answer
56 views

How to disable interface just for NetworkManager in Kali Linux?

I have two WLAN interfaces, and I want to disable one of them for NetworkManager, so that if I run something like service network-manager stop, all the interfaces should stop except on of the WLAN ...
2
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1answer
76 views

Network interface crashes after disconnecting eth wire or restarting service

At startup or reboot, network interface works fine. Host is reachable and also can communicate with other devices on the local net or internet. IP address is configured as static, and dns-nameservers ...
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0answers
21 views

Systemd and controlling network settings

I'm trying to figure out best way to control network settings in best way possible in real time. My current plan is this: Start ip -s -d -o monitor with systemd and write its output to file ...
3
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1answer
32 views

WiFi card disappears after reboot, but not after cold boot

I have an Arch-based server (Zotac Nano, AMD Kabini-based) which doubles as WiFi access point using a miniPCI Atheros WiFi card. If I start it form cold boot (as in “it was off”), then everything ...
1
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1answer
375 views

Ubuntu 16.04: How is the bonding kernel module gettting loaded automatically?

I recently set up an Ubuntu 16.04 system with a bonded ethernet configuration. Previously, it appears that to get this to work the bonding module needed to be included in /etc/modules or /etc/modules....
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1answer
50 views

Set an IP in Centos for access in SSH when connected through WiFi

I recently installed CentOS 7 on Virtual Box with a minimal installation, and I have enabled the network interface in order to show my IP and access to it through SSH when connected by an Ethernet ...
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51 views

ubuntu 14.04 create route to multicast stream server and have access udp://239.255.0.169:5500

My server is ubuntu 14.04 server edition and I am trying to re stream existed multicast stream by my server : Multicast stream server is using udp://239.255.0.169:5500 destination ip. On my side I ...
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0answers
23 views

Cannot connect to WiFi network using /etc/network/interfaces

I'm trying to connect to a WEP WiFi network using only the /etc/network/interfaces file: auto lo iface lo inet loopback auto wlan0 iface wlan0 inet dhcp wireless-essid mySSID wireless-key ...
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0answers
41 views

Static ip definition for wlan0 not working

I am setting up a web server on my raspberry pi. I want to connect it to my router via ethernet (static ip) but if the ethernet is disconnected I want it to automatically start using the wifi (static ...
0
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1answer
34 views

How to determine if it is a fault of the Network Card?

Basically, I have a PC having problems. Let's call it POO. POO is a pc running Gentoo Linux, with KDE. It is quite freshly setup on an old hardware. So far I do not notice it has other problems, ...
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2answers
23 views

ping gateway but not domain

I can ping gateway its ok but when I try ping google.com response is; "unknown host google.com" network-scripts/ifcfg-ens0p3 file content: TYPE="Ethernet" BOOTPROTO="static" IPADDR="192.168.0.14" ...
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1answer
19 views

virtual monitoring interface on wifi card

I only have one wifi nic in my computer, but I want to be able to monitor all traffic while still connecting to a network. I was thinking (if it is possible) to have a physical interface wlan0 ...
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156 views

Kali Linux Rolling Alfa NHA wireless Error -22, Kali in Virtual Box (host Kali) Live Mode

Hi Ive just purchased an Alfa AWUS036NHA wireless USB wireless Adapter. I have also just upgraded the installed Kali 2.0 Sana on my hard drive to the new Kali rolling. There seems to be issues ...
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156 views

Wifi interface recognized as ethernet

I am having trouble setting up my wifi configuration persistently. I have tried both netctl and NetworkManager and both only work after manual setup. What I find especially weird is that ip link ...
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1answer
39 views

Is there a portable way to get the name of the WiFi card on the command line without additional parsing?

In this tool, the name of the wireless interface is hardcoded to be wlan0. This was a reasonable assumption up through Ubuntu 14.04, but the wireless interface name appears to have changed in Ubuntu ...