Logical Device Name assigned to Physical NIC mapping
I'm looking for a scripted solution that will show which logical network interfaces are mapped to which physical NICs.That is, if a server has 2+ interfaces and 2+ NICs, how do I know which NIC...
View ArticleI can't state up my interface
sudo ip linkoutput:2: wlp1s0: <BROADCAST,MULTICAST> mtu 1500 qdisc noqueue state DOWN mode DORMANT group default qlen 1000link/ether 80:c5:f2:81:ca:31 brd ff:ff:ff:ff:ff:ffsudo ip link set dev...
View ArticleHow to redo renaming interfaces with 70-persistent-net.rules?
I use Ubuntu 18.04 and renamed the interfaces and want to redo this renaming. I don't want to use the 70-persistent-net.rules for the back renaming.I delete the content and removed the file with...
View Articlenmcli - command line means to delete all wifi / wlan0 connections
I'd like to delete all active or inactive Wifi connections on interface wlan0, with the intention of having a known-empty clean slate to set things up. Is this possible?I was hoping for something...
View ArticleMeaning of "default" in "iface default inet dhcp" in interfaces file
My /etc/network/interfaces file contains the line:iface default inet dhcpI vaguely remember putting it in there years ago, but I don't remember why I did so.If I am not mistaken, iface precedes a...
View ArticleRTNETLINK "file exists" error when attempting to create veth interface that...
Linux Mint 20.2I used this command to create a dummy ethernet interface called veth0:sudo ip link add veth0 type dummyOnce finished I removed it with:sudo ip link delete veth0 type dummyThe interface...
View ArticleMeasure traffic for an interface monthly
I am running a small RPi server in a remote home and I have a simcard with very limited data usage. I would like to have a file that measures cumulatively month by month (starting, for example, from...
View ArticleInterface groups
I started to study Linux networking system (especially Ubuntu) lately.I got interface info by command ip a like this:1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group...
View ArticleAutomatic set-up, the network can bus with Ubuntu 20.04
I want to set-up the network of the CAN bus automatically with Ubuntu 20.04.For other distributions, it is done like this in /etc/network/interfaces:allow-hotplug can0iface can0 can static bitrate...
View ArticleDebian name wifi interfaces according to their drivers using udev...
Hi I am working on Debian. Would like to name my wifi interfaces according to their drivermodifying /etc/udev/rules.d/90-persistent-net.ruleswith: SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*",...
View Articlerenaming wireless interface
I know I can rename my wireless interface with ip link set name , but when I do other programs won't identify the new name, namely wash, and then if I run iwconfig down I can't get systemctl won't...
View ArticleChange 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 been...
View ArticleDisplay the IP addresses of all currently configured interfaces [closed]
Display the IP addresses of all currently configured interfaces. The output shoulddone in the following format:iThe interface eth0 currently has the IP 192.168.178.22The interface eth1 currently has...
View Article/etc/network/interfaces - difference between auto and allow-hotplug
I am running Debian 9.13. I tried to check what is the difference between auto eth1 and allow-hotplug eth1 in /etc/network/interfaces. I have eth1 networking interface connected via USB. I tried...
View ArticleHow to interpret "functions ... may also be defined as macros"?
For the sake of public record, I'm asking here at SE rather than on the standardization mailing list, so that it'd be more accessible to people.With practically every headers that specify functions (or...
View Articlenmcli add a route to dev not a next hop
Need to add a static route with nmcli to a device interface.I would like to mimic a command like this with ip route (traffic sent to the interface NOT a next-hop ip)ip route add 4.4.0.0/30 dev ens4I...
View ArticleGood detailed explanation of /etc/network/interfaces syntax?
I understood the very basic concept of how to use /etc/network/interfaces, but all I find online are examples, example after example, which I can copy-paste from. What I miss is an explanation of the...
View ArticleHow to change network mask using ip command
I tried to change the network mask using Linux ip command and got confused. Google search doesn't clarify it either. If someone could explain? Say I have interface enp0s31f6 on my Linux...
View ArticleHow to use ifconfig to show active interface only
By default ifconfig will show me all available interfaces , but what if I just want to display active ones? Like, en0 only in below. en0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST>...
View ArticleUsing 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 noqueueWhat is the meaning of M-DOWN? What...
View ArticleAudio playback from assembly language in Unix?
Looking for a simple audio interface for UnixFor fun, I'm learning x86 assembly language by porting an old game. The trickiest part is finding a way to play simple sounds (square waves, mostly). The...
View Articlecharacteristics of interface type dummy
I've configured an interface 'nonlocal' with type dummyip link add nonlocal type dummyon that interface are some IPv6 addresses configured. Now an apache can start with some ip based vhosts on...
View ArticleALSA - USB Interface - How to choose only one channel
I am currently trying to record audio with ALSA and a USB interface. I am using a focusrite scarlett 4i4 3rd gen and a raspberry pi 4b with linux debian bookwarm installed.My question is how do I...
View ArticleInbound connections fail to connect after initiating OpenVPN connection
There is a cronjob on another box which is reaching out to me every minute;$ nc -lvnp 80GET / HTTP/1.1[snipped for brevity]I want to eventually relay the traffic over a VPN, so I've connected to it:$...
View Articlenetwork interfaces rename not working as expected. Where to look?
System is Ubuntu 16.10. It has been updated quite some times, so it might have some remaining stuff from earlier versions in there (at least back till 14.04, probably much longer).The issue it the...
View ArticleScript Output In Polybar Network Module?
In standard module we has:[module/wlan]type = internal/networkinterface-type = wirelessinterval = 5format-connected = <label-connected>format-disconnected =...
View Articledummy interface on linux
I need to create a second separate virtual interface on Linux.I choose dummy. And do these steps:$ cat /etc/modules-load.d/dummy.conf# Load dummy.ko at bootdummy$ cat...
View ArticlePredictable network interface names with BusyBox
I want to map each hardware NIC to a specific linux network interface (ethX) persistently, as currently when an ethernet cable is reconnected, it picks an interface seemingly at random. This is trivial...
View Articlehow can I change the interface ip address in linux without ifconfig command....
network: version:2 renderer :ethernets:ens160:dhcp4: nodhcp6:no address: 192.168.10.13/24 gateway4:192.168.10.1nameservers:addresses: 142.55.100.25142.55.44.25
View ArticleWhy is my WiFi is always hard-blocked on my HP Pavilion G6?
I wish you could help me with this matter which is WiFi hard blocked in my Linux machine and can't get the WiFi up.My device is an HP Pavilion G6 and WiFi card is Ralink 5390; the default of the...
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