How do I reset my Network settings to default (Ubuntu 16)?
Run
ifconfig
and see the name of your network adapter. Mine is: enp0s3
now run this command
sudo nano /etc/network/interfaces
and you should get something inside....delete everything and paste this (but change the network adapter name where enp0s3 is):
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).
source /etc/network/interfaces.d/*
# The loopback network interface
auto lo
iface lo inet loopback
# The primary network interface
auto enp0s3
iface enp0s3 inet dhcp
save the document and reboot...
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RJacob41
Updated on September 18, 2022Comments
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RJacob41 over 1 year
I messed up my network settings through the command line. I have a headless Ubuntu Server 16.04 without any desktop environment installed for a lighter-weight installation and connected to my local network through ethernet, and I use a Windows 10 laptop with SSH to access it, so I do not have a extra screen to use to reinstall Ubuntu. Is there any way to reset all my network settings through the command line?
What exactly happened was: I was playing around with the command line because I wanted to access my server through SSH without typing in an IP address every time I connected, so I used
sudo hostname
with all its possible arguments to change its hostname from an IP address to my name. Now, SSH, SFTP, FTP, SMB, HTTP and almost everything possible is a million times slower than usual and sometimes returns "Took too long to load".I don't mind resetting the entire OS, but I don't have an screen/monitor to use with a bootable USB/DVD. I need a solution because my website is getting affected - It takes about 45 seconds to load a 8.2MB webpage although my internet speed is above 10MBPS.
SSH is working relatively better, so is there any command-line solution to my problem?
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RJacob41 over 7 yearsAlso, when I ping my server through my local network, the request times out.
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lewis4u over 7 yearsdid you try my answer
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RJacob41 over 7 yearsI already had that, but thank you anyway!
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RJacob41 over 7 yearsAnd I fixed the problem, my router had a problem; I got a new one
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lewis4u over 7 yearsAh okay...glad you made it work
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Puspam about 3 yearsThe question is about "How to reset" not "How to restart". Those two are separate things.
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Gunjan Paul about 3 yearslast time I solved the issue by restarting NetworkManager, so I shared this solution