ifconfig

Machine MAC address with Ubuntu on top of WSL2

Machine MAC address with Ubuntu on top of WSL2 Running Ubuntu 22.04.3 LTS on top of WSL2 Output of ifconfig: eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1492 inet 172.28.193.11 netmask 255.255.240.0 broadcast 172.28.207.255 inet6 fe80::215:5dff:fe3e:7ffa prefixlen 64 scopeid 0x20<link> ether 00:15:5d:3e:7f:fa txqueuelen 1000 (Ethernet) RX packets 1402 bytes 590609 (590.6 KB) RX errors 0 dropped 0 overruns 0 …

Total answers: 2

How to find unspoofed MAC address of NIC

How to find unspoofed MAC address of NIC In Red Hat Enterprise Linux (RHEL) 8, if someone does ifconfig eth0 hw ether abcd12341234, all I know is ifconfig and ip -a, so then is there a way to reliably get the real MAC address of that eth0 interface and if so how? … other than …

Total answers: 3

default gateway not set when using bond0 interface

default gateway not set when using bond0 interface This is my /etc/network/interfaces file: auto bond0 iface bond0 inet manual address 10.66.7.11/24 gateway 10.66.7.1 bond-mode 802.3ad bond-slaves eth2 eth3 bond-miimon 100 bond-downdelay 200 bond-updelay 400 bond-lacp-rate 1 up ifconfig bond0 10.66.7.11/24 up when I bring the bond0 interface up, it works, but the default gateway is …

Total answers: 1

Routing Table Modification on Ubuntu/Raspbian with VLAN Consideration

Routing Table Modification on Ubuntu/Raspbian with VLAN Consideration I had an issue with my Pi-Hole recently where after resolving I found my networks no longer had DNS resolution. After some troubleshooting I found the Unbound process (PI-Hole upstream) was sending DNS resolution requests to the internet over a virtual NIC (192.168.5.1) that was blocked by …

Total answers: 1

bxe0 and bxe1 to eth0 and eth1 respectively

bxe0 and bxe1 to eth0 and eth1 respectively I have a freebsd which has the network interfaces as follows. bxe0, bxe1, igd0 and igd1 I want to move them to names like eth0, eth1 and so on. I know that I can do it in the /etc/rc.conf ifconfig_igb0_name=eth0 but during the boot time the network …

Total answers: 1

ifconfig bridge on macos – BRDGADD en0: Resource busy

ifconfig bridge on macos – BRDGADD en0: Resource busy Anyone know how to createa bridge network interface on MacOS v12.4 Mon? I have tried: sudo ifconfig bridge7 create sudo ifconfig bridge7 addm en0 sudo ifconfig bridge7 up In step two I get this: ifconfig: BRDGADD en0: Resource busy Asked By: Chris G. || Source Short …

Total answers: 1

wlan0 isn't working most of times

wlan0 isn't working most of times I earlier asked a question Wifi isnt working after using wifite [duplicate]. This and this answer helped me. But, the problem is it works but, after few hours later when I start my laptop I get the same issue. I faces the issue whenever I run codes on the …

Total answers: 2

ifconfig and locate command not found, `bash: ifconfig: command not found`

ifconfig and locate command not found, `bash: ifconfig: command not found` In the Linux-Ubuntu terminal: ifconfig throws bash: ifconfig: command not found locate command does the same. sudo yum install net-tools throws: bash: yum: command not found as well, but I might also have made a spelling mistake there when I tested it. What does …

Total answers: 4

What are these ifconfig interfaces on macOS

What are these ifconfig interfaces on macOS I have a MacBook Pro 15" 2018 (Touch Bar). I see it has a lot of network interfaces. I would like to know what they are/what they do. I did some research but I couldn’t really figure out all of them, here are their SCNetworkInterfaceInfo.UserDefinedName with information I …

Total answers: 2

Command that only displays ip address and subnet mask using ifconfig

Command that only displays ip address and subnet mask using ifconfig I need help with my Linux laboratories. Does anybody know a combination of command complies with this exercise? Look at the output of /sbin/ifconfig. Write a line that only displays IP address and the subnet mask. (use head; grep; tr -s; cut; ) This …

Total answers: 2

How can I get the ipv4 address from `ip link` like I used to see with ifconfig?

How can I get the ipv4 address from `ip link` like I used to see with ifconfig? When I run ip to get the ip address, I’m getting $ ip link 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 2: wlp3s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 …

Total answers: 1

ip vs ifconfig commands pros and cons

ip vs ifconfig commands pros and cons At some point, in some teaching material (from Linux Foundation) on Linux that I came across, the following is mentioned: ip command is more versatile and more efficient than ifconfig because it uses netlink sockets rather than ioctl system calls. Can anyone elaborate a bit on this because …

Total answers: 2

How to understand (the output of) ifconfig or ip addr show

How to understand (the output of) ifconfig or ip addr show The ifconfig command dumps a lot of information at you, especially if you have a lot of interfaces, and you don’t know where they come from. I’ve read through the "Ifconfig Command – Explained in┬áDetail" tutorial page, which gives a great rundown on most of …

Total answers: 2

ifconfig missing after Ubuntu 18.04 install

ifconfig missing after Ubuntu 18.04 install I’ve just installed Ubuntu 18.04 and selected “minimal install”. I then tried to run ifconfig in the terminal and got the following message -bash: ifconfig: command not found How come the net-tools package is not installed by default any more? Asked By: JiiB || Source ifconfig is deprecated, and …

Total answers: 4

How to capture the first IP address from a ifconfig command?

How to capture the first IP address from a ifconfig command? How to capture the first IP address that comes from ifconfig command? ifconfig -a enw178032: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet 100.14.22.12 netmask 255.255.0.0 broadcast 100.14.255.255 inet6 fe80::250:56ff:fe9c:158a prefixlen 64 scopeid 0x20<link> ether 00:10:56:9c:65:8a txqueuelen 1000 (Ethernet) RX packets 26846250 bytes 12068811576 (11.2 GiB) RX errors …

Total answers: 3

How to show only interfaces starting with a certain pattern

How to show only interfaces starting with a certain pattern Open-Vswitch creates virtual interfaces, they all have this pattern: s[digit]-eth[digit] For example: s1-eth1, s1-eth2, s12-eth3, s2-eth3 … I want to show information of -for example- all interfaces starting with s1 (in our example, it must give s1-eth1 and s1-eth2). I tried this command, but it …

Total answers: 7

Create an array with all network interfaces in bash

Create an array with all network interfaces in bash I want to create an array in Bash which to contain all active network interfaces. I have managed to create a for loop printing them but when I try to create the array, it just contains the last lo interface but not the other. This is …

Total answers: 5

How do I get my IP address from the command line?

How do I get my IP address from the command line? I’m using Debian 8. How do I get my external IP address from a command line? I thought the below command would do the job … myuser@myserver:~ $ /sbin/ifconfig $1 | grep “inet|inet6” | awk -F’ ‘ ‘{print $2}’ | awk ‘{print $1}’ addr:192.168.0.114 …

Total answers: 3

What is a generic socket and how does it relate to a network device?

What is a generic socket and how does it relate to a network device? I’m trying to understand how network drivers work under Linux. This Q&A showed that the network device in Linux isn’t represented by a device file. It states that network drivers work with sockets. For example, this references how to setup the …

Total answers: 1