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Questions tagged [resolv.conf]

resolv.conf - resolver configuration file

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How do I add a DNS server via resolv.conf?

Is /etc/resolv.conf useless in Ubuntu 12.04 LTS (Precise Pangolin)? I see that the DNS server information is stored in NetworkManager now. The nmcli command line tool can list that for you. If I ...
PnotNP's user avatar
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198 votes
21 answers
609k views

How do I include lines in resolv.conf that won't get lost on reboot?

I have finally migrated to 12.04 from 7.10. I have one last part to complete but I am stumped. I am using Puppet on each server, and in the past I have included a nameserver address and a search ...
Sam's user avatar
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124 votes
13 answers
494k views

How do I get resolvconf to regenerate resolv.conf after I change /etc/network/interfaces?

After updating /etc/network/interfaces with something very similar to below, how do I get /etc/resolv.conf to update? I tried (as root) resolver -u, service networking restart but they didn't work. I ...
null's user avatar
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88 votes
3 answers
120k views

How can I flush the DNS on Ubuntu 17.04?

How can I flush the DNS on Ubuntu 17.04? I seem to have a few DNS issues at the moment since upgrading to 17.04 from 16.10 and went to flush the DNS but I can't find how to. Can anyone tell me ...
dibs's user avatar
  • 3,509
70 votes
7 answers
295k views

How to set the fully qualified domain name in 12.04?

I tried adding dns-domain domain.com to /etc/network/interfaces with no luck. When I run hostname -d I get an empty string
Drew's user avatar
  • 801
66 votes
4 answers
191k views

network manager: how to stop nm updating /etc/resolv.conf

I do not want network manager to add DNS servers received from DHCP to my /etc/resolv.conf. When configuring from GUI/Connections/IPV4 and choose the method Automatic (address only) it still adds DNS ...
user2913139's user avatar
63 votes
4 answers
99k views

nameserver 127.0.1.1 in resolv.conf won't go away!

I've read that I should have nameserver 127.0.1.1 in my /etc/resolv.conf file only if my machine has its own DNS server. Since it doesn't, having it causes problems. But no matter what I do I can not ...
Mehran's user avatar
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45 votes
13 answers
118k views

Temporary Failure in name resolution on WSL

Running Ubuntu on WSL and trying to push to github and download new python modules using pip and I get this error. Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after ...
m_bash's user avatar
  • 551
43 votes
5 answers
101k views

NetworkManager not populating resolv.conf

I recently upgraded from 11.10 to 12.04, and now NetworkManager isn't populating /etc/resolv.conf when connecting to wireless networks, when it had been working perfectly in 11.10. I'm not seeing any ...
Cerin's user avatar
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42 votes
15 answers
151k views

resolv.conf keeps getting reset by something

I need help figuring out why my resolv.conf keeps changing to this, causing me to not be able to access the outside internet and only the local network: $ cat /etc/resolv.conf nameserver 192.168.16.1 ...
jontsai's user avatar
  • 529
38 votes
5 answers
170k views

How to restore/recreate etc/resolv.conf files

I deleted both the resolvconf folder and the resolv.conf file in /etc by mistake, assuming that resolvconf was causing UCK to fail. Now the application has upgraded, fixing the issue, but it says no ...
beeju's user avatar
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36 votes
4 answers
54k views

16.10 fail to resolve DNS

After upgrading my 16.04-installation to 16.10, I have trouble with DNS. First I got problems a couple of times when connected to WiFi, while it worked on ethernet. Now it seems to work on WiFi also. ...
aweibell's user avatar
  • 542
35 votes
4 answers
164k views

Should I edit my resolv.conf file to fix wrong DNS problem?

I have the problem that my Ubuntu machine uses the wrong DNS server. For some reason the machine queries localhost for DNS information. I have added the DNS server in the network settings GUI, but /...
Ahatius's user avatar
  • 2,097
34 votes
3 answers
87k views

Make /etc/resolv.conf changes permanent in WSL 2

On WSL 2, when I try to connect to a website, I get an issue: $ ping www.google.com ping: www.google.com: Temporary failure in name resolution Now, to fix this, I had to add /etc/wsl.conf with this ...
Olivier Grégoire's user avatar
25 votes
1 answer
93k views

What does "sudo echo nameserver 8.8.8.8 > /etc/resolv.conf" do?

Can someone please tell me what sudo echo nameserver 8.8.8.8 > /etc/resolv.conf does? I used to have random dropping of internet connection for 15 seconds to 3 mins but after using this command, ...
Jeanno's user avatar
  • 573
21 votes
4 answers
53k views

Resolvconf -u gives the error "resolvconf: Error: /etc/resolv.conf must be a symlink"

I use resolvconf to have static DNS servers set in /etc/resolv.conf. However, when I run sudo resolvconf -u to update /etc/resolv.conf with new static information, I get the error 'resolvconf: Error: /...
Azendale's user avatar
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20 votes
6 answers
45k views

host is able to resolve a hostname, ssh isn't

I'm trying to connect from a 10.04 system to a 12.04 system via SSH. Strangely enough the rules in resolv.conf seem to take effect only selectively, which leaves me puzzled. Observe: [2] user@mach:~$ ...
0xC0000022L's user avatar
  • 5,722
18 votes
3 answers
182k views

Editing dns-nameservers in /etc/network/interfaces without a restart [duplicate]

After editing dns-nameservers in /etc/network/interfaces, how do I tell resolvconf(8) to read the new value without restarting networking? (causing a service interruption) The -u option doesn't seem ...
Eric's user avatar
  • 281
18 votes
1 answer
70k views

Why does my name resolution hit the DNS even with a hosts file entry?

I'm running Ubuntu 10.04.2 LTS Desktop. Being a web developer, naturally I created a "me.com" in my /etc/hosts file. Unfortunately, my name resolution is going out to the DNS before first checking my ...
Volomike's user avatar
  • 2,293
18 votes
7 answers
21k views

Why does my resolv.conf file get regenerated every time?

My /etc/resolv.conf file gets regenerated every time, making me loose Google DNS servers when I reconnect my 3G modem. For changing the DNS settings, I looked at http://code.google.com/intl/fr-FR/...
Jakh Saidlikp's user avatar
16 votes
4 answers
39k views

How to override the DHCP-provided nameserver?

I (think) that I've configured a static IP address in /etc/network/interfaces: # The primary network interface auto eth0 iface eth0 inet static address 10.1.1.2 netmask 255.255.255.0 ...
David Parks's user avatar
  • 2,536
16 votes
6 answers
81k views

DNS issues after upgrading to 20.04

After upgrading to 20.04, both my wired and wireless networking lost access to the internet. I confirmed my drivers were working when I was able to resolve a ping to the Google nameserver 8.8.8.8. Now,...
Mykle's user avatar
  • 331
15 votes
4 answers
63k views

How to make persistent changes to /etc/resolv.conf Ubuntu 18.10

My resolv.conf file has 'nameserver 127.0.0.53'. I need to replace it with different value or add another nameserver. I erased symlink, replaced it with file. Now it is managed by Network Manager, ...
Igor's user avatar
  • 175
14 votes
3 answers
19k views

DNS server address no longer stored in resolv.conf; where is it now?

I sometimes switch DNS servers, using the NetworkManager indicator in the taskbar; this worked fine with previous versions, and actually works fine with 12.04, too, except for one thing: I use Conky ...
Marty Fried's user avatar
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14 votes
3 answers
8k views

systemd-resolved, resolvconf.service, resolvconf and openresolv. Why, which and how?

I'm using a VPN client which adds two name servers to /etc/resolv.conf. All my connections are managed by Network-Manager. I have to use this VPN client for my work VPN but after Ubuntu went to ...
Christian's user avatar
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14 votes
0 answers
16k views

How To Auto Add To /etc/resolv.conf? [duplicate]

On Ubuntu 10.04 Server, you can edit a file and it will automatically add a nameserver to the /etc/resolv.conf on boot. Unfortunately, Ubuntu 10.04 Desktop does not have this feature that I'm aware of,...
Volomike's user avatar
  • 2,293
13 votes
4 answers
22k views

DNS resolver stopped working after upgrade to 20.04

Just after Ubuntu upgrade to 20.04 /etc/resolv.conf contains: nameserver 127.0.2.1 and it does not work. It works after changing to: nameserver 127.0.0.53 But it is overridden after each restart ...
Marcin Skórzewski's user avatar
13 votes
2 answers
16k views

Getting openconnect vpn to work through network-manager

This is the same issue as here: Getting openconnect vpn to work through gui , but my additions to it were deleted and I was asked to create a new question. In fact, there are a number of folks asking ...
user avatar
12 votes
4 answers
63k views

/etc/resolv.conf" E166: Can't open linked file for writing

Unable to update resolv.conf file. /etc/resolv.conf" E166: Can't open linked file for writing Ubuntu 18.04.1
JackyChan's user avatar
  • 304
12 votes
2 answers
40k views

resolv.conf - No DNS servers known

I am using focal Ubuntu 20.04.1 LTS (hosted virtual machine) Occasionally after a reboot DNS resolution fails (e.g. ping google.com > Resource temporarily unavailable) To 'fix' this I reboot the ...
wal's user avatar
  • 123
12 votes
3 answers
11k views

Cannot resolve custom domains when VPN is up

I just upgraded to 12.04 from 11.10, and now I can't resolve custom domains over my VPN (e.g. *.dev.local). It worked splendid before the upgrade. Both my /etc/resolv.conf and route -n looks exactly ...
Oscar's user avatar
  • 221
11 votes
3 answers
25k views

/run/resolvconf/resolv.conf gets erased each time I restart, and I can't use internet without it (16.04)

I have been solving issues with my ubuntu - windows partition. So after having an issue with the clock of the system and i think this triggering that I couldn't log into my user (it just bounced back)...
Antonio Kuri's user avatar
11 votes
3 answers
39k views

How do I remove localhost nameserver from resolv.conf

Currently my /etc/resolv.conf reads: nameserver 127.0.0.1 nameserver 10.255.0.101 nameserver 10.255.0.11 and I want it to instead read: search [my domain] nameserver 10.255.0.101 ...
user217676's user avatar
11 votes
4 answers
38k views

18.04: Bionic Beaver: enforce static /etc/resolv.conf

Previously, on Ubuntu 16.04, I felt betrayed when an Ubuntu update installed dnsmasq package, configured it, and gave it precedence over my own super-stable, ultra-fast, and own-configured BIND DNS ...
M  K's user avatar
  • 2,405
10 votes
2 answers
20k views

Un-removable /etc/resolv.conf

During an upgrade to 12.04 today I've got an error when running post-install hook for resolvconf package: Setting up resolvconf (1.63ubuntu11) ... resolvconf.postinst: Error: Cannot replace the ...
Sergey's user avatar
  • 43.9k
10 votes
1 answer
60k views

The "resolv.conf" file becomes empty after each restart [duplicate]

The "/etc/resolv.conf" file becomes empty after each restart and I lose the DNS data set in it. It only contains the following text each time: # Generated by NetworkManager What should I do?
B Faley's user avatar
  • 424
9 votes
3 answers
53k views

How do I set a static DNS nameserver address on Ubuntu Server?

I am trying statically to set DNS server addresses in my Ubuntu server running as virtual machine. I followed all recommendations on official Ubuntu support pages but I simply cannot get rid of my ISP'...
Aleks's user avatar
  • 91
8 votes
2 answers
23k views

Network configuration: resolv.conf and hosts

I read This manual and I'm a little confused. This is what I don't undetstand: When your system tries to resolve a hostname to an IP address or determine the ostname for an IP address, it refers to ...
yotamoo's user avatar
  • 4,229
8 votes
3 answers
35k views

Why did I have to remove resolvconf to get dnsmasq to work again?

Yesterday I upgraded to Precise and dnsmasq stopped working. That is, DNS queries to localhost where dnsmasq is listening (127.0.0.1) were refused. Removing resolvconf (apt-get remove resolvconf) ...
lightxx's user avatar
  • 211
8 votes
8 answers
25k views

make netplan write resolve.conf

I have an Odroid C2 - a single board computer running 18.04 minimal for ARM. Originally, it was using NetworkManager + systemd-resolved to manage network connections, but since I use only Ethernet and ...
e-pirate's user avatar
  • 123
8 votes
1 answer
4k views

Openconnect in network-manager does not update resolv.conf

I just updated from ubuntu 19.10 to ubuntu 20.04. Now my resolve.conf does not get updated anymore when I connect to vpn with the openconnect thing in the network manager. This works correctly: ...
Veda's user avatar
  • 305
7 votes
7 answers
61k views

Can not edit resolv.conf

I am using Ubuntu 14.04 and I have to edit the resolv.conf file So this is what I am trying to do sudo su vi /etc/resolv.conf But when I try to edit it says the file is read only When I try to do ...
iec2011007's user avatar
7 votes
2 answers
8k views

How do I activate a local caching nameserver?

I want to have strong DNS cache server on my local host (server). So I need to change name server to my localhost. How can I change it? byt this config it seems I must don't change it via editor so ...
Mohammad Hossein Fattahizadeh's user avatar
7 votes
1 answer
3k views

Dynamic /etc/resolv.conf file?

I have several Ubuntu servers. Two of them are working as DNS servers. One of my name servers (let's call it DNS1) went down for maintenance. I sill had another DNS server running (DNS2). All other ...
Khaled's user avatar
  • 1,672
7 votes
2 answers
15k views

Accidentally deleted /etc/resolv.conf and now can't access any domain

I was getting dns probe finished message in chrome on Ubuntu 18.04 so I looked up on the internet and tried to run the following commands. sudo rm/etc/resolv.conf sudo ln -s /var/run/resolvconf/...
आनंद's user avatar
7 votes
3 answers
11k views

resolveconf -u keeps adding an unwanted search domain to resolve.conf

I have my desktop computer configured with a static IP address: However, /etc/resolve.conf keeps getting overwritten with: nameserver 127.0.0.1 search localdomain example.com This seems to happen ...
Stephen Ostermiller's user avatar
7 votes
0 answers
23k views

Issue with resolv.conf - no such file or directory

Having a bit of issue restoring my ubuntu box When I start it I get the following error Failed to start Clean up any mess left by 0dns-up.....dns-clean.service" When booting into recovery mode > ...
Hex02's user avatar
  • 71
5 votes
4 answers
35k views

How to edit /etc/resolv.conf on Ubuntu 12.04

I have two network interfaces configured via DHCP. As a result, /etc/resolv.conf is populated with information coming from the DHCP server. How can I edit this file? I know that if I add prepend ...
JustTrying's user avatar
5 votes
4 answers
21k views

18.04 Unable to connect to server due to "Temporary failure in name resolution"

I am at a bit of a loss. I am able to perform an nslookup and a dig on the address "imap.comcast.net" but if I try to ping it or connect to it from my application I get a "Temporary failure in name ...
user avatar
5 votes
4 answers
11k views

How to prevent Juniper Network Connect breaking DNS resolutions

Juniper Network Connect has been an issue on 64bit Linux for quite sometime. I have found 2 solutions to the Java issue (Could anyone provide a step by step for getting juniper netconnect and citrix? ...
psypher246's user avatar

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