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.

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1
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2answers
27 views

Why do I have so many IPV6 addresses for a single ethernet card

Output of running ifconfig on my system is: eth3 Link encap:Ethernet HWaddr 44:8a:5b:93:34:25 inet addr:172.32.17.71 Bcast:172.32.17.255 Mask:255.255.255.0 inet6 addr: ...
0
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0answers
27 views

NetworkManager does not detect when cable is connected or disconnected

On my Fedora 21 64bit Gnome 3.14.3 install, I have noticed that the NeworkManager always connects to the wired connection, even if the cable is not connected: However, the driver (or something) ...
2
votes
1answer
36 views

connecting linux device to a tablet via usb

I can connect my Linux device (an embedded device) to a tablet in the following way: Use a micro USB to Ethernet cable converter use a USB to Ethernet on my Linux device. connect the two device to ...
0
votes
1answer
25 views

Debian server makes internet connection drop

I have setup a small home server / NAS running Debian 7. The server is connected directly to the router with a static IP set in the router's control panel. There are no port forwarding rules set for ...
1
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0answers
18 views

What does the “first Ethernet card” mean in the BSD world?

https://www.freebsd.org/doc/handbook/network-routing.html The designation link#1 refers to the first Ethernet card in the machine. Question: what does the "first Ethernet card" mean? How to ...
0
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0answers
16 views

What Linux app will show me how much internet bandwidth each process is using? [duplicate]

Linuxmint 13 Cinnamon 32 bit with ver. 16 backports ethernet (eth0) + pppoe (ppp0) + FTTH (fiber optic to the home) no wifi What program(s) can I use to tell me how much up/down internet traffic ...
0
votes
1answer
28 views

USB3 to Ethernet stops after sometimes

This is my first post to this website. I this that my question is related to serverfault cause it is related to ethernet communication issue. If you disagree please let me know what is the appropriate ...
2
votes
1answer
55 views

empty 70-persistent-net.rules on SuSe 13.1 and ethernet device called eno1

openSuse 13.1 configured my network controller as eno1 during installation. Also eno1 device can not be configured by KDE Network Connection tool, it doesn't allow you to add a connection for this ...
0
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0answers
35 views

Unable to connect the Ubuntu EC2 instance to VPC LAN on AWS using secondary NIC adapter?

Infrastructure setup: VPC is created with 192.168.254.0/24 netwok Private subnet within VPC (Virtual Private Cloud) is created with 192.168.254.0/25 network Public subnet within the VPC is created ...
1
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2answers
50 views

Determine ethernet speed in RHEL 6

How to check whether eth0 has connection speed 10Mbit, 100Mbit or 1Gbit? I tried ethtool, but it says No data available. I also tried dmesg | grep -i duplex and it's empty. [root@dioptase ~]# lspci ...
1
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1answer
96 views

How can I create Local Loopback on Linux?

I need to create local loopback as shown herein: Performing Loopback Testing for Fast Ethernet and Gigabit Ethernet Interfaces. Excerpt Configure a Local Loopback Action To configure a local ...
1
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1answer
71 views

How to force FreeBSD to assign default router when acquiring IP in DHCP mode?

How to force FreeBSD to assign default router when acquiring IP in DHCP mode? My machines are FreeBSD 8.2-PRERELEASE or RELEASE The NIC (respectively em0 or re0) is set to get a dynamic IP address. ...
1
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2answers
58 views

How can I debug traffic on a switched network with Wireshark?

I have an IP phone on my home network that I am trying to call using SIP from outside of my home network. I have port forwarding setup, but the phone is responding with a SIP 404 message. All the ...
1
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0answers
181 views

Unable to add eth0 in Rhel 7

I am unable to find eth0 in RHEL 7 after just installation. Even I created the eth0 inside the /etc/sysconfig/network-scripts/ directory. After created eth0 inside the network-scripts, I am unable to ...
0
votes
1answer
119 views

FreeBSD Ethernet NIC driver not recognized

Intel Motherboard GA-H61N-D2V $ pciconf -l -v re0@pci0:1:0:0: class=0x020000 card=0xe0001458 chip=0x816810ec rev=0x06 hdr=0x00 vendor = 'Realtek Semiconductor' device = 'Gigabit ...
0
votes
1answer
14 views

Itcpdump output - why is it showing an Ethernet status?

tcpdump -i mlan0 -n tcpdump: verbose output suppressed, use -v or -vv for full protocol decode listening on mlan0, link-type EN10MB (Ethernet), capture size 262144 bytes Why is this ...
1
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0answers
70 views

SOCAT / MINICOM “No such device or address”

I'm no Linux guru, however I've done quite a lot of research on Socat and I simply cannot create a device that Minicom can see. In this case, port 10001 is the port that a Black Box Ethernet to ...
2
votes
1answer
71 views

Does each network packet cause an interrupt to CPU?

While I know that lot of packet processing(CRC calculations, packet segmentation handling, etc) can be offloaded to NIC, then does each packet still cause an interrupt to CPU? Is there a difference if ...
0
votes
1answer
43 views

trouble bridging tap0 and tap1

I have a GNS3 router that is connected to tap1 in my host. On the other hand, I have an user application connected to tap0 running locally in my host. I can ping both the router and my application. ...
0
votes
0answers
67 views

connected to ethernet and wifi, “route” browser's connection to wifi only

Sometimes, in my company, I have to work with a different network (through ethernet) that has no internet. On the other hand, I do have access to out Wifi, which has internet. Since I have to spend a ...
1
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0answers
108 views

Setting up a 802.11s mesh network for mobile devices to communicate with a wired server

I'm in the process of developing an android app that maintains a device's connectivity to a linux-based WiFi mesh network, and periodically sends status information (GPS, battery life, etc.) to a ...
0
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0answers
30 views

How can I compile and run a program designed for an older kernel version (2.6) in a newer kernel (3.16)?

I'm trying to run a driver for a network card, but it only supports kernels up to 2.6.32. I need to be able to use this piece of hardware to connect to the Internet. The device I'm using is "VIA ...
1
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0answers
91 views

Cannot connect to the Internet using a Realtek Lan RTL8105TA card

I'm new to both Elementary OS and Linux on the whole. I have made a LiveUsb to try it out before installing it on my notebook. Everything works fine except for the internet. I don't have WiFi, but a ...
2
votes
1answer
88 views

How to do mac spoofing on Linux Mint 17?

How to do mac spoofing on Linux Mint 17? Through macchanger -a I've tried to changemy mac address but new mac id doesn't authenticates successfully. pppd gives successful authentication message only ...
5
votes
2answers
176 views

How to check programatically if the Ethernet cable is plugged in?

As you know, in Windows, when we plug in the network cable, the network symbol will change to another status. How can I know whether the cable is plugged in or not via the command prompt in Linux?
3
votes
4answers
1k views

Transfer files between Windows and Linux machines?

My problem is that I need to backup the files on my Linux machine to my Windows laptop. My external hard drive died, and so backing up to an external drive is out of the question for the time being. ...
0
votes
0answers
54 views

Why on my Linux PPPoE connection displays sometimes authentication failure?

Here is my log: Oct 18 09:51:52 -desktop pppd[2764]: Plugin rp-pppoe.so loaded. Oct 18 09:51:52 -desktop pppd[2766]: pppd 2.4.5 started by root, uid 0 Oct 18 09:51:52 -desktop pppd[2766]: PPP session ...
1
vote
4answers
927 views

How to find IP address of device connected on the same network as PC based on MAC id

A PC and embedded Linux device is connected on the same local network.(We don't have DHCP server access, IT admin has the access). We also don't have access to debug UART on the embedded Linux board. ...
7
votes
2answers
694 views

Identical MAC address on two different VM, yet I have internet connectivity

I have set up a network as such: Set up host-only networking on VirtualBox. The first adapter is configured with NAT, the second with host-only networking HOST: Windows GUEST: CentOS VM1, CentOS VM2 ...
2
votes
2answers
86 views

Test connectivity of a Interface

I have a raspberry Pi with three interfaces eth0 (Ethernet), wlan0 (WiFi), and wwan0 (via a GSM modem) How can I test if an Internet connection is available via a certain interface? e.g. is my ...
0
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0answers
154 views

BeagleBone Black doesn't connect via Ethernet on laptop

I have a BeagleBone Black board connected to my laptop with only a serial connection and the Ethernet cable, and powered by the 5mm jack. The serial connection works fine, I can login at any time, but ...
1
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3answers
133 views

How to get the original MAC address of a network card, after the OS modified it?

How can I find out the original MAC address for a network card, after it was modified by the OS? dmesg doesn't provide it, and the logs in /var/log too, and dmidecode doesn't provide it too and ...
0
votes
2answers
126 views

Wifi and ethernet unstable (takes many tries to connect, disconnects)

Both my WiFi connection and my Ethernet connection have recently (I'd say about a week ago) become unstable, without any change in the configs. Now in order to connect I've to try several times and ...
1
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1answer
228 views

How to test an ethernet card?

I have a USB->Ethernet card that may or may not be somehow broken. The problem is I don't really know how to test it. I have a normal Ethernet port as well, so I can hook a (already tested) cable from ...
0
votes
3answers
98 views

How do I configure my Linux computer to provide Internet to a FreeBSD computer via Ethernet port?

I have FreeBSD computer to which I want to provide with an Internet connection via the Ethernet port. I bought a single board computer (SBC Wangboard DUAL) onto which I have installed Ubuntu. I ...
1
vote
1answer
345 views

ifconfig ethernet (eth0) no data flow

Hello this is my ifconfig output: eth0 Link encap:Ethernet HWaddr 50:46:5d:44:5e:fe inet addr:10.0.0.6 Bcast:10.0.0.255 Mask:255.255.255.0 inet6 addr: ...
3
votes
0answers
147 views

difference tun/tap, is the interfaces that handle protocols or the OS?

I have difficulties to understand difference between tap and tun interface. I know it is an often asked question and I apologize for that. I asked the same questions on stackoverflow and someone told ...
0
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0answers
49 views

Intel Centrino Wirelsess-N 1030 not getting connected on generic mode in ubuntu 14.04

I upgraded Ubuntu from 12.04 to 14.04. After upgrading neither WLAN and ethernet work and also does not work in recovery mode (enable networking) or root shell. When booting the previous version ...
1
vote
1answer
302 views

Change eth0 to em1 on Scientific Linux

The aim is to standardize the Ethernet adapter type on all production servers. One of these servers disposes an em1, rather than eth0. Today, an attempt has been done to change it, without success. ...
0
votes
0answers
395 views

eth0 and wlan0 set-up problem in Linux Mint

I had a perfectly working wi-fi connection on my Mint-KDE PC. Recently, I brought a Synology NAS and after some research figured that I need to set my eth0 to static IP for it to connect to NAS via ...
0
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0answers
2k views

Linux Mint 17, Wifi Slow and Drops Connection, No Ethernet Connection

On a fresh install and updated Linux Mint 17 XFCE, the system cannot maintain an internet connection through wifi, and is unable to connect at all through ethernet. Wifi will work somewhat slowly for ...
10
votes
2answers
760 views

How can I create a virtual ethernet interface on a machine without a physical adapter?

I have a Dell XPS 13 ultrabook which has a wifi nic, but no physical ethernet nic (wlan0, but no eth0). I need to create a virtual adapter for using Vagrant with NFS, but am finding that the typical ...
4
votes
1answer
835 views

How can I most simply transparently bridge traffic between wlan0 and eth0?

I am looking to do this on a Raspberry Pi, but I don't mind which operating system I have to install, so the easiest most out-of-the-box solution for Pidora (Fedora 20 Remix), Raspbian (Debian) or ...
1
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2answers
90 views

netcat to capture ethernet

How can I make sure the result of the following command: nc eth0 &> capture.txt would capture the data + errors transmitted via eth0?
2
votes
1answer
111 views

reset Ethernet bonding without rebooting

I have the following Ethernet bonding configuration: old configuration: bond0 eth0 eth1 bond1 eth2 eth3 new configuration : bond0 eth0 eth2 bond1 eth1 eth3 I have made the ...
0
votes
2answers
241 views

Access remote server after running ifdown eth0

I had a problem: Could not retrieve mirrorlist http://mirrorlist.centos.org/release=6&arch=x86_64&repo=os error was 14: PYCURL ERROR 6 - "Couldn't resolve host 'mirrorlist.centos.org'" Error: ...
1
vote
1answer
69 views

Unable to see eth0 after ifconfig

Yesterday, I have done some changes in /etc/sysconfig/network-scripts/ifcfg-eht0 in centos 6. I have edited the value of nm_controlled= "no" after "Yes". Now, I am unable to see the "eth0" after doing ...
0
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3answers
4k views

eth0: ERROR while getting interface flags: No such device [duplicate]

I set up CentOS yet. it's no network connection. eth0 is not device list. I take a message network is unreachable while ping 192.168.0.1 the screen shot of device list How can I do reachable ...
1
vote
1answer
285 views

How to transfer data “offline” between osx and ubuntu?

I need to transfer around 50gb of data from my Ubuntu to my OSX. scp and samba are both too slow it seems - even with the Ethernet cable connected (14-15 hours!). I have physical access to both ...
2
votes
2answers
458 views

How can I install Fedora with a newer kernel?

I want to install Fedora on my computer with a netinstall, but it seems that the kernel doesn’t support my ethernet chip (Intel I218V). I tested Ubuntu 14.04 and Arch Linux and the ethernet chip ...