Questions tagged [interface]
The interface tag has no usage guidance.
98
questions
0
votes
0answers
19 views
VirtualBox: How to use a specific interface for NAT?
I have eth0 and wlan0. eth0 is the default interface. What I want is to make VirtualBox use wlan0 as NAT. Is this possible? Host and guest are both Debian.
Edit: VBoxManage modifyvm "Debian" --...
2
votes
1answer
65 views
dummy interface on linux
I need to create a second separate virtual interface on Linux.
I choose dummy. And do these steps:
$ cat /etc/modules-load.d/dummy.conf
# Load dummy.ko at boot
dummy
$ cat /etc/sysconfig/network-...
0
votes
1answer
38 views
Traffic into lo vs eth, why might I be seeing only half the traffic on lo compared to eth?
I am forwarding traffic to ports on eth0 and lo.
For the same traffic at the same ports and different ports, when I do a tcpdump and count the packets, for time t, I only see about half the number of ...
0
votes
0answers
17 views
How to route network traffic through an interface on another host?
I have limited networking knowledge, so please bear with me :)
I have a host that runs a VM that has 2 interfaces (ens33 and crc). My host has an interface (eth0) that is on the same subnet as "ens33"...
0
votes
1answer
102 views
How to Combine a Bridge with VLAN over a Bonding and Two Default Gateways
I have a Linux server with three NIC that are connected to a switch (one NIC is the management, two NIC form a LACP bonding). In addition I need to use a VLAN (167), because the switch is configured ...
0
votes
1answer
28 views
How to set the interface name in `kickstart.cfg` file?
How to set the interface name in kickstart.cfg file?
We know if we install CentOS system in a Server, there maybe eth0, ens0, ensxxx, eno1 and so on.
I have questions,
Why there will generate ...
1
vote
1answer
454 views
Bonding of two NIC does not work/go up
I have a Linux server with two NIC that are connected to a switch (and one NIC for management) and I want to use combine them and use LACP there, but for some unknown reason to me the bonding will ...
3
votes
1answer
196 views
Where does ethtool get information from?
When I run the command ethtool -S wlp2s0, I get the following information:
NIC statistics:
rx_packets: 63
rx_bytes: 14163
rx_duplicates: 2
rx_fragments: 58
rx_dropped: 30
...
0
votes
0answers
48 views
From VLAN10 (eth0.10) Internet access to the whole network and clients? How to route?
Can I make the Internet Access of VLAN10 (eth0.10) to whole Router an Clients?
iptables -A FORWARD -i br0 -s 192.168.1.0/255.255.255.0 -j ACCEPT
iptables -A FORWARD -i eth0 -d 192.168.1.0/255.255.255....
0
votes
0answers
12 views
VM CentOS7.2 can not change the interface name
I have a CentOS 7.2 virtual machine. when I execute the below commands to change the default interface name, seems have no effect:
1) I change the /etc/sysconfig/network-script/ifcfg-ens33 filename ...
0
votes
1answer
63 views
I do not want a debian interface [duplicate]
Today I set up an old portable pc to be a dedicated machine
I have installed debian and at installation process I have chose Cinnamon for graphical interface
Now my system is configured and working ...
-1
votes
1answer
581 views
Kali Linux (Kernel 4.19) MT7610u failed to load
I have installed Kali Linux alongside windows 10 on my system all is good except I get the following errors in dmesg every time I boot.
mt76x0 1-1.3:1.0: firmware: failed to load mediatek/mt7610u....
0
votes
0answers
515 views
UDP send buffer error in netstat
I we are running voice application which stream UDP (RTP) packets for voice, I am investigation some strange issue where my ifconfig ens4 | grep error counter going up specifically overrun
If you see ...
0
votes
0answers
20 views
Dell poweredge running ubuntu server, redundant interfaces
I have an ubuntu server 18.04 with redundant internet interfaces.
As of now my ifconfig looks like this:
eno1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.0.150 ...
3
votes
5answers
471 views
setting firewall-cmd --permanent is not sticking after reboot
I have two network interfaces: eth0, and p2p1. My default zone is set to public. I would like to permanently set p2p1 to be trusted.
In order the achieve this I run:
sudo firewall-cmd --permanent --...
0
votes
1answer
150 views
Error running vlc on Redhat Enterprise Linux 7
I have installed vlc using following commands-
#> yum install vlc
#> yum install vlc-core
When i try to run vlc, i am getting the following error-
[0000000001bce288] core demux error: ...
-1
votes
1answer
1k views
eth: error fetching interface information: Device not found
I have an ubuntu 18.04 linux server.
Why does the command(ifconfig eth) says Device not found whereas this command(ifconfig eth0) works?
$ ifconfig eth
eth: error fetching interface information: ...
5
votes
1answer
1k views
What does “if1@if2” mean in interface name in output of “ip address” command on Ubuntu
What does at sign (@) mean in interface name in output of "ip address" command (or the "ip link" command) on Ubuntu, for example interface name "eth0@if44" in the following output:
root@aafa1fc24a0b:/...
2
votes
1answer
368 views
Edit interfaces file in C++
Is there any known API to edit /etc/network/interfaces file?
I've written a piece of code to make the user able to change IP address of the system from the frontend (web interface). I'm modifying the ...
1
vote
1answer
814 views
Linux emulate multiple Wifi connections
I have a Linux machine that creates a Wifi hotspot. I need to simulate a few clients connecting to that hotspot and then using that connectiong to talk to a service, through the wlan interface. The ...
1
vote
1answer
479 views
How to use different virtual network interfaces for different processes?
The solution to non-virtual network interfaces is here: https://unix.stackexchange.com/a/210992
But the problem is I have multiple IPs on one network interface and I'd like to be able to assign each ...
0
votes
1answer
255 views
How to interface LCD for new WaRP7 (imx7s-solo)?
I'm trying to interface LCD for my new WaRP (imx7s-solo). (we can found both LCD and WaRP7 here LCD and WaRP7 product) The problem is I can not have enough knowledge to verify my work is right or ...
0
votes
1answer
110 views
Getting unexpected interfaces in CentOS 7
Suddenly getting some bulk interfaces which should not be in server. Interfaces named like as0t1,as0t2,as0t3 etc. Almost 40 interface like this has been created of which i have no idea. Actually some ...
4
votes
0answers
776 views
Entries order in /etc/network/interfaces
I have a device with two interfaces, eth0 and eth1. One should get its IP from a DHCP server and the other should get its IP statically.
If my /etc/network/interfaces file is configured as follows:
...
4
votes
2answers
1k views
Connecting two clients on different physical interfaces using smcroute
I am very new to networking. I have two clients connected on two different physical interfaces which has upnp running on them. I want to add both of them to the same multicast group, so that they both ...
0
votes
2answers
93 views
Shared to other computer - Different Interface
I'm using a Debian based Linux system, basically there are these interfaces:
wlan0 "wifi connected - 192.168.0.0/24"
interface2 "not physical interface - 192.168.20.0/24"
eth0 "ethernet cable ...
1
vote
0answers
696 views
Debian, two IPv6 addresses on single interface
I need to add the second IPv6 to the single interface in Debian Stretch.
When using IPv4, this is simple becasue multiple inet static definitions works, i. e.:
iface enp5s0f0.10 inet static ...
2
votes
0answers
844 views
Configuring serial driver sc16is7xx
Initial Question
I work with the NXP chip SC16IS740 as a peripheral to an embedded linux system (mainline kernel v4.8). The usecase is quite simple, a continuosly transmitting uart line (9600 8n1) ...
1
vote
0answers
513 views
Why my Raspberry pi receive no packets using Ethernet?
I use a Raspberry pi 3b. The OS is Raspbian jessie.
I don't understand why I can't connect with any RJ45 cable, and only wireless connection works. The cable rj45 is straight.
The step I did to ...
0
votes
1answer
3k views
isp-dhcp-server, ipv6, WARNING: Host declarations are global. They are not limited to the scope you declared them in
Ciao, this is weird. Everything is working, but I cannot assign static ipv6 addresses.
error
Jun 12 10:19:15 server dhcpd[2768]: WARNING: Host declarations are global. They are not limited to the ...
1
vote
1answer
3k views
DHCPD ip6, No subnet6 declaration for enp2s0 (2001:470:1f1a:5b3::2)
This is weird! I got IP4 DHCP, it works. But with IPV6 not working.
Do you know what it could be?
INTERFACE
allow-hotplug enp2s0
iface enp2s0 inet static
metric 10
address 192.168.78.20
...
9
votes
3answers
33k views
Change Mac Address permanently inside /etc/network/interfaces
QUESTION:
How might I be able to specifically change the Mac Address of the enp3s0 and wlp2s0 interfaces through the /etc/network/interfaces file? What code would I have to include inside? I have ...
1
vote
0answers
111 views
How does the following network configuration differ on eth0?
I have a raspberry pi and it has 2 configuration files in /etc/network/, although I set it up I'm very new to networking and not sure what each of the lines do or what the differences are between the ...
1
vote
1answer
769 views
Redirecting IPv6 traffic to a VPN interface
I would like to redirect all ipv6 traffic from my local network to a VPN interface. Eth1 is a local interface on the local server, while eth0 is used for internet connection from my home router.
So ...
3
votes
1answer
1k views
Using ip, what does M-DOWN mean?
When using the terminal tool ip, there is a number of flags for every interface.
Example: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP,M-DOWN> mtu 1500 qdisc noqueue
What is the meaning of M-DOWN? ...
2
votes
1answer
996 views
network interfaces rename not working as expected. Where to look?
System is Ubuntu 16.10. It has been updated quite some times, so it might have some remaining stuff from earlier versions in there (at least back till 14.04, probably much longer).
The issue it the ...
1
vote
2answers
597 views
Is value of bInterfaceProtocol fixed or decided by Kernel?
Let's say:
$ ls -l /dev/input/by-id
lrwxrwxrwx 1 root root 10 Feb 10 03:47 usb-Logitech_USB_Keyboard-event-if01 -> ../event22
lrwxrwxrwx 1 root root 10 Feb 10 03:47 usb-Logitech_USB_Keyboard-event-...
2
votes
1answer
115 views
Where can I find the japanese interface package for zabbix server?
Yesterday I installed zabbix server and agent on some of my EC2 Instance (running Ubuntu 16.04)
Now I want to add the japanese language interface for my zabbix server (because I'm working for a ...
3
votes
1answer
4k views
How to setup a WLAN interfaces with one for Hotspot?
So I'm trying to setup a two interfaces for two wireless cards. One card for connecting to wireless network an one for a hotspot to access this computer through SSH. I need wlan0 for WI-FI connection ...
0
votes
1answer
776 views
how to create virtual router/switch on Ubuntu server
I have a dedicated server ubuntu 16.04 OS / 8 GB Ram, with over 5000 IPv6 from /48 subnet assigned to using below command
ip -6 addr add IPv6/48 dev eth0
creating massive parllel connections cycling ...
1
vote
0answers
443 views
Tap interface is not receiving packets
I'm configuring a tap interface and trying to send and receive packets through it, i configure it like this:
ip tuntap add name tap0 mode tap multi_queue
ip link set tap0 up
i'm using scapy to send ...
1
vote
1answer
109 views
Find what physical interface is external facing
I would like to know how I can bash script a check to see which interface has an external connection (eth0, eth1, wlan0, em1 and em2) so i can get a script to work on any machine without having to ...
1
vote
0answers
184 views
Route specific layer 2 traffic output to another interface
Supposing I have 1 interface (wlan0) and 1 virtual interface (wlan0:0).
What I want is to route specific layer 2 traffic (arp request only for example) from wlan0 to wlan0:0
My problem is very ...
0
votes
0answers
719 views
Internet connection over GSM module + PPP
I am trying to get internet connection in my raspberry pi 3 (Raspbian) with a GSM (SIM900a) module, connecting it to RXD/TXD Serial ports (/dev/ttyS0), I already got an ip address and DNSs, but I can'...
2
votes
2answers
2k views
What network interface is a process using?
Is there a way to find what process is using a given network interface? The title of a related question on here is a bit too specific for my needs.
I need to confirm whether my process is running on ...
1
vote
2answers
713 views
Assigning persistent interface names, using udev, with a generalized method
I'm currently working on a Raspberry Pi 3, trying to do some IoT stuff. I want it to be able to sniff on a usb wireless adapter, and send its data either via default wireless adapter or ethernet. I ...
0
votes
2answers
128 views
Ubuntu 15.10 Networking Problems
I recently deployed a VM with Ubuntu 15.10 and I am having trouble configuring the network properly. Note: When the OS was installed, it picked up an IP (from DHCP I guess), because it didn't ask me ...
0
votes
1answer
187 views
How to run bash script when eth0 came up from hibernate
I have following problem and I can not solve it: My Debian server should execute a Bash script as soon as eth0 came up from hibernate.
I have created a script in /etc/network/if-up.d/:
#!/bin/sh
# ...
3
votes
1answer
318 views
Can AppArmor restrict access to a specific interface?
A deceptively simple question;
Can Apparmor on Ubuntu (any release) restrict network access for a specific application to a specific network interface?
If it can; an example/tutorial/etc link would ...
1
vote
0answers
114 views
Configuring a Linux Forwarding Engine
I am trying to configure my Debian machine to simply forward all ingoing network packets on interface eth0 to eth1.
My hardware setup is the following:
Sender Machine A (eth0) ----> (eth0) Forward ...
