Questions tagged [dns]

Domain Name System for computers, services, or any resource connected to the Internet. It translates domain names meaningful to humans into the numerical identifiers associated with networking equipment for the purpose of locating and addressing these devices worldwide.

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ubuntu zone transfer error

I transferred files from my Windows Server 2019 into ubuntu and I checked the logs and it says "transfer success", but when I try to cat the zone file it displays in binary format any ideas. ...
2 votes
1 answer
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Set DNS server globally on Kubuntu?

Kubuntu allows to setup DNS for a connection. Each time I connect to a new connection, I have to set up DNS for it. Is there a way to setup DNS globally?
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DNS Not Resolving at all - 22.04.3

Today DNS stopped resolving. I can still ping the internet by IP address but no domain names are resolved. I've tried restarting resolved editing resolved's config files: disable DNSSec, enter name ...
4 votes
1 answer
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Ubuntu 20.04 "Temporary failure in name resolution" - recently reinstalled

I rent a vps from contabo for about half a year now, it worked fine until now, because it started producing "Temporary failure in name resolution" errors. I read that this is a DNS error, I tried ...
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NFS mounting including FQDN Fails

I'm running into a weird issue with mounting an NFS share on my 22.04.3 Ubuntu box. When I try to mount the share using the server's FQDN like this: sudo mount -t nfs nfsserver01.mydomain.com:/path/to/...
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1 answer
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How can I change Ubuntu server IP Address to web address?

How can I change Ubuntu server IP Address to the web address? For example, the address that I need to access on the browser is 192.168.x.xxx. How can I change to dev.robi.local? Thanks! The /etc/...
2 votes
1 answer
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I installed DNS server in my initial Ubuntu server installion how do I uninstall it?

I installed a DNS server in my initiate Ubuntu server installation how do I uninstall it? Cause I don't want it any more and I don't want it laying around cause I heard the more server services my ...
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Name resolution (hostname) doesn't work /Ubuntu 22.04 server

I cannot ping or mount using hostname of server on domain network. Server is almost fresh install, just using apache, mysql, php for webhosting. If I ping server with its hostname it result with this ...
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Can't reach internet after reboot. But I can ping DNS servers Ubuntu 23.10

A fresh install 23.10 with UFW and OpenVPN, all works no problem. Then, after a restart, the network icon comes up with a question mark. And I can't reach the internet. I can ping whatever IP I want, ...
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1 answer
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How to set DNS from command line on Ubuntu 20.04 Desktop?

I'm trying to set a DNS server on Ubuntu 20.04 Desktop. So far this is what I have. In /etc/systemd/resolved.conf this is the content: # This file is part of systemd. # # systemd is free software; ...
25 votes
8 answers
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DNS not working on WSL

I'm currently using an Insider build of Windows 11. (22458) However, I had this problem a few times on other builds. (and wsl worked before) When I start wsl, I'm not able to do a DNS request. (...
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Bind9 fails loading from master file because it adds a ".com" to the file they're searching

I'm having an odd problem that I'm not sure how to explain either here or to google. On the named.conf.local I have declared as "site1.edu.ve" but I get this error zone site1.ve/IN: loading ...
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1 answer
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systemd-resolved dns over https (doh) with custom port and domain

I want to use dns over https (doh) on my system (Ubuntu 22 LTS) and connect to a server (smartSNI) which is listening on port 9443, but the DNS resolution doesn't work correctly. resolvectl --version ...
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1 answer
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bind9 - unable to resolve external names

EDIT: Now works, but please see comment below. I have setup bind9 following this tutorial. I am now able to ping my NS by name, as well as my main computer, each of which I correctly entered A & ...
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1 answer
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ping a *.local address client [closed]

I have a bind9 dns cache server running (for example with zone ".home" and any clients with ubuntu and raspberian. Additionally some other clients with Mac OS, Windows etc. I can ping all ...
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1 answer
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Failed to enable unit: Unit file named.service does not exist

everyone After installing bind9 apt install -y bind9 bind9utils bind9-doc dnsutils I want to enable named service. systemctl enable named But I get this error: Failed to enable unit: Unit file ...
-1 votes
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Is it safe to uninstall resolvconf if ubuntu >= 18.04?

I recently installed an ubuntu 20.04 for testing, and noticed it did not have resolvconf installed on it. Going over the changelogs of Ubuntu, it seems this is part of Ubuntu 18: https://wiki.ubuntu....
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Ubuntu 22.04 wifi connection is lost every x minutes

A week or two ago my wifi started losing the connection every 10-20 minutes. As far as I am aware I did not do any updates or anything prior to this. I have tried all sorts of solutions found online, ...
154 votes
5 answers
971k views

How do I configure my DNS settings in Ubuntu server?

According to this page it appears to be simple. However, /etc/bind does not exist on the default installation of Ubuntu 12.04.3 LTS server. So, without installing any further software, how can ...
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1 answer
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Failed to start Raise network interfaces, after upgrading to Ubuntu 18.04.1 LTS

ifup gets stuck, and it takes a long time at boot up and down. me@K501L:~$ systemctl status networking.service ● networking.service - Raise network interfaces Loaded: loaded (/lib/systemd/system/...
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2 answers
9k views

How can I refresh resolv.conf after changing the resolv options in the interfaces file?

After bringing up a dhcp controlled instance in AWS I have made changes to the /etc/network/interfaces file for custom nameserver and DNS search strings: auto lo auto eth0 iface lo inet loopback dns-...
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Handling DNS Resolution Failure after Releasing the Primary Public IP on Linux Machine with Multiple IPs

I am encountering an issue on my Linux machine with multiple network interfaces and IP addresses. Specifically, after releasing the primary public IP (let's call it 112. * .* .1) on the ens3 interface,...
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DNS Problems with Ubuntu 22.04 LTS

I have a problem to config the correct DNS. My Server receive over 700K of SMTP request daily which are using DNSBL and in some cases the DNSBL can't handle that amount of mails. I get a reason: 530 ...
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1 answer
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Unable to connect to network

For some reason I cannot access anything other than local sites hosted on my network - I do connect to the router however the WiFi icon appears as a ? rather than showing me the signal strength. ...
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1 answer
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Ubuntu MX records

I am little confused about MX records. At least I think that is the problem, I followed a lot of guides about how to setup postfix, postfixadmin, dovecot on my VPS with Ubuntu 16.04, but I had no luck ...
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1 answer
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Can't ping dynamic IPv6 Xubuntu hostname from Kubuntu laptop

Ever since I updated my computers yesterday with the latest Ubuntu updates, I have been having issues with the computers communicating with each other. Originally, nothing (Either my mobile [Android], ...
1 vote
2 answers
10k views

Ubuntu 14.04 - Connection is there but no internet access - messed resolvconf

Let me start with a disclaimer: I have tried to fix my problem by reading similar questions & answers, but so far no luck. Not only that, but I think that by making some changes to resolvconf I ...
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1 answer
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DNS servers and public hotspots - 25% of them fail and solution is hard to find

At about 25% of random wifi hotspots I have no trouble connecting with my phone, but my linux does not connect. I tried everything in this post. nslookup google.com does not work ➜ ~ nslookup google....
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Ubuntu server cant ping outside network &| DNS (Temporary failure in name resolution)

My network on the server is not working, help much appreciated default via 192.168.50.1 dev eno1 proto static 172.17.0.0/16 dev docker0 proto kernel scope link src 172.17.0.1 linkdown 192.168.50.0/...
7 votes
1 answer
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Unable to connect to internet using Android wifi tethering (hotspot) in Ubuntu 14.04

I'm unable to connect to Internet when using Android WiFi hot-spot (I'm able to connect to hot-spot, but not able to access Internet). When I use a WiFi router Internet works fine. In chrome I get ...
0 votes
1 answer
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Network settings seems to be completely broken, no logic to be seen

I have been a random problem with my server for a while, every now and then after a reboot the network suddenly completely stops working. Normally, after a few changes in the network files I am ...
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1 answer
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A particular domain is not getting opened in any of my browsers at my Ubuntu 22.04.3 LTS

In every other device the domain can be accessed , even from console when I tried to ping its working perfectly without any packet loss. But the browsers both firefox and chrome are unable to open ...
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Local hostnames giving 'Temporary failure in name resolution' error

I setup a brand new VM on my network with Ubuntu 22.04 and a static IP. However, for some reason I can't lookup machines on the local network via hostname. It works fine on my older VMS. Is there some ...
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How to prevent Docker causing my .local address to resolve to 172.29.0.1?

I have a recently installed machine (called vader), with a custom DNS entry on my Pi-hole. This works, when I try to resolve vader.home: $ resolvectl query vader.home vader.home: 192.168.1.212 ...
4 votes
1 answer
9k views

Ubuntu 22.04 - VPN's DNS server not used for resolving addresses

I'm using Ubuntu 22.04 and I've been trying to make VPN connection work next to my normal network. I'd like to route traffic through VPN only for its network (selected "Use this connection only ...
1 vote
4 answers
8k views

Cannot connect to some sites on Ubuntu 18.04

Recently some of the websites stopped loading on any browser of my Ubuntu 18.04. When I try to open sites like StackOverflow, UbuntuForums, seedr.cc, gives me the following message (other browsers ...
1 vote
0 answers
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Bind9 starts but won't listen to any ports

I am getting nuts here... I have a fresh install of Ubuntu 20.04.6, and I am trying to get bind9 to work. But I do not succeed. I started with removing systemd-resolved and added a ipv4 DNS directly ...
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148 views

DNS Server issue on Ubuntu 22.04

I have read tons of posts about DNS and fixing that but it was not solved. I have a private virtual network and multiple VMs are connected to a router with internet. All of them have internet and ...
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Slow network traffic with DNS only after migrating Ubuntu Server 22.04.2 LTS to airgapped network

I have two networks in my environment, a main network and an offline/air-gapped network. The standard process for deploying Ubuntu servers to the air-gapped network is to clone a template VM on the ...
4 votes
2 answers
397 views

dnsmasq is not logging dns queries

Here's how I am debugging this issue from the command line: $ dnsmasq --no-daemon --log-queries Putting the log-queries option in the config file and running it as a daemon still showed nothing on ...
7 votes
4 answers
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openconnect is connected but does not use the right dns

sudo openconnect --protocol=nc [corporate vpn url] GET [corporate vpn url] Connected to [corporate vpn ip]:443 SSL negotiation with [corporate vpn url] Connected to HTTPS on [corporate vpn url] Got ...
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NetworkManager rewrites name servers in config file

I have a wifi network connection that has a config file /etc/NetworkManager/system-connections/MyNetwork.nmconnection Name resolving did not work, so I added my provider's name servers. But upon ...
2 votes
0 answers
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bind9, named not accessible over local network behind router ubuntu 20.04

i have a zte F6600R router from my isp provider with following configuration DHCP SERVER : ON LAN IP ADDR : 192.168.1.1 SUBNET MASK : 255.255.255.0 DHCP start IP : 192.168.1.10 DHCP end IP : 192.168.1....
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1 answer
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ufw blocks DNS response

i've got an ubuntu server (Ubuntu 22.04 LTS) running with svn, duplicati, rdp-forwarding and ssh-access. My problem is that i cant resolve hostnames within our network an beyond. sudo apt update is ...
2 votes
1 answer
7k views

No DNS domain configured for <myServer> whilst joining AD domain

So I'm having the lovely experience of attempting to join an Ubuntu-Server instance to a corporate AD domain built exclusively for Windows. I've configgured SSHD and SAMBA however, when I run: sudo ...
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1 answer
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Ubuntu 22.04 is connected to internet, but cannot open any website in the browser

HELP!!! everything was ok until I went to the office and connected my laptop to the Wi-Fi. then I came home and everything was destroyed! My Ubuntu is connected to wifi, and the ping of 8.8.8.8 is ok, ...
3 votes
1 answer
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Unable to set FQDN in Ubuntu 22.04

The instructions I have found say to edit the /etc/hostname file and add the hostname, without the domain portion. To set the domain portion, I should edit /etc/hosts and add an entry that looks ...
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Ubuntu Pro on AWS | Temporary failure in name resolution

I created a new EC2 instance with Ubuntu Pro 22.04 image. After 1st access, I updated system packages and Audited/fixed using usg command. After usg fix command, I rebooted the system and upon 1st ...
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1 answer
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Ubuntu - Basic Host Name Resolution 18.04 Issues

Ok.. a bit new to ubuntu.. but not linux. Seems very simple. I need to ping my FQDN of host (VM) and get response back with its routable IP. I know my DNS forward and reverse IP lookup resolves via ...
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2 answers
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(EAI 2)Name or service not known: AH00549: Failed to resolve server name for xxx.xxx.xxx.xxx (check DNS)

I am trying to install Localhost web-server on my Ubuntu 18.04 by this instruction. How To Install Linux, Apache, MySQL, PHP (LAMP) stack on Ubuntu 18.04 But by testing the apach2 i get this error: r$ ...

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