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- What is the loopback device and how do I use it? - Ask Ubuntu
The loopback device is a special, virtual network interface that your computer uses to communicate with itself It is used mainly for diagnostics and troubleshooting, and to connect to servers running on the local machine The Purpose of Loopback When a network interface is disconnected--for example, when an Ethernet port is unplugged or Wi-Fi is turned off or not associated with an access
- What is difference between localhost address 127. 0. 0. 1 and 127. 0. 1. 1
127 0 0 1 is the loopback address, commonly known as localhost, which is the name that resolves to it by the local hosts file This file is in different locations depending on the OS, but in most Linux distros it is in etc hosts
- networking - What is the difference between Pinging loopback address . . .
What I found was loopback tests whether the TCP IP suite of our system is working properly or not and pinging our IP makes sure that NIC is working fine This is okay but I wish to know its working
- encryption - LUKS and loop device - Ask Ubuntu
However, if the device argument is a file, cryptsetup tries to allocate a loopback device and map it into this file This mode requires Linux kernel 2 6 25 or more recent which supports the loop autoclear flag (loop device is cleared on last close automatically) Of course, you can always map a file to a loop-device manually
- networking - How to bring up network on boot-up when . . . - Ask Ubuntu
Add eth0 to auto lo, like: auto lo eth0 This will bring up lo (loopback) and eth0 on running ifup -a (done at boot time) From man interfaces: Lines beginning with the word "auto" are used to identify the physical interfaces to be brought up when ifup is run with the -a option (This option is used by the system boot scripts ) Physical interface names should follow the word "auto" on the same
- How do I configure my static DNS in interfaces? - Ask Ubuntu
I am using Ubuntu 12 04 My etc network interfaces file consists of: # The loopback network interface auto lo iface lo inet loopback # The primary network interface
- How to boot from an . iso file in GRUB2? - Ask Ubuntu
The loopback line contains your hard disk in grub style (hdx,y x=0->sda x=1->sdb aso) and the path The third element to change is in the linux line Store this file as “50_ubuntu” in “ etc grub d“, make it executable with “chmod a+x 50_ubuntu” and activate the changes with “ubdate-grub“
- Network interfaces not detected on 20. 04 - Ask Ubuntu
I am using LTS version 20 04 and for some reason the NetworkManager service disappeared from the system I manually installed Network Manager service, but still cannot see a network interface detec
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