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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Unable to join Samba ad domain in Windows Client- “DNS name does not exist.”

I have installed samba ad in ubuntu 18.04 cloud server and dns records available in that server The following error occurred when DNS was queried for the service location (SRV) resource record used to ...
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New openvpn server clients can ping layer 2 but not layer 3 (DNS)

I am trying to configure a new openvpn server and my clients can connect to the server, ping 4.2.2.2, but fails at layer 3 (DNS). error: ping google.com temporary failure in name resolution server ...
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Ethernet not Working on Ubuntu 20.04, despite working on another OS installed side by side

My question is about Fixing IP allotment and DNS for ubuntu 20.04 I've recently installed Ubuntu 20.04 along with Kali Linux. Everything was working fine when I was done working I shut down my pc. The ...
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Can ping, but no data exchange over internet

I am on a Wifi hotspot that is controlled directly by my ISP. I have been using this connection for the past 4 years. From time to time, a problem like this happens: Internet is connected per se. I ...
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ubuntu 20.04 systemd-resolved cannot resolve .local zone

On a Ubuntu 20.04 AWS EC2 instance, an application need to resolve .local zone. It is a private zone, created in Route53, accessible only from the VPC. From a CentOS 7 instance (without systemd-...
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Ubuntu keeps changing my DNS to 127.0.0.53

I installed expressvpn with Chrome extension. And even when I disable the VPN my system keeps changing my DNS to 127.0.0.53 and I have to manually change it back to 192.168.1.1 for internet to work. ...
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Windows can resolve a website but ubuntu18.04, can't

I have been struggling with this for hours ,https://www.montefiorenyack.org/home-care , this website works perfectly fine in windows, but when I switch to Ubuntu 18.04 , dns refuse to resolve it. I ...
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Ubuntu 20.04 Wifi connected, but cannot access internet

I'm having the following weird internet connection problem that I'm struggling to fix. I have a working home wifi / internet connection. I have a phone and another windows based PC on the network, and ...
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Multiple websites on nginx on one IP address

I checked out the Multiple websites on nginx, one IP but I have a small different situation. I want to host three websites (one for thelounge and other two is ASP.NET Core web app which listens on ...
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How to solve DNS_PROBE_FINISHED_NXDOMAIN for GCE running Ubuntu 18.04 LTS

I'm facing DNS related Error DNS_PROBE_FINISHED_NXDOMAIN with my GCE with my domain ecoqr.in which was previously pointing to another instance in a different project on GCE. Previous instance was ...
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How to fix DNS leak OpenVPN on Ubuntu 20.04?

Okay, so basically I am using openvpn to connect on one of the NordVPN's servers. But long story short, I haven't even noticed all until this night, my DNS is leaking somehow. My sys. info: str1ng@...
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Ubuntu 20.04 “Temporary failure resolving”

So, this morning it just seems something last night must of mucked it up i have no idea how... Everything that is run in Cron sends to a local mail server and i dont see any errors there, ive tried to ...
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If I have 2 web domains that have the same ip address, how should I test in browser for each web domain if by just typing the ip address?

I am currently using Ubuntu 20.04 and a newbie, I have made 2 web domains: site1.com and site2.com, both of them having the same ip address, but when I type the ip address on the browser, only site1....
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How to I “lock” my choice of DNS settings?

I am using Ubuntu 20.04. I have changed my DNS setting on my router to one of the cleanbrowsing DNS filters. This setting can be changed easily from the router webpage. Even if I set a strong password ...
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Connection problem after changing wifi or logging off on Ubuntu 20.04 LTS

I'm using ubuntu 20.04 LTS. Here's my problem, when i change my wifi or log off, i cannot get internet anymore :,( I got this error when trying to browse a website : DNS_PROBE_FINISHED_BAD_CONFIG. ...
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Why does NetworkManager set 'bind-interfaces' for the system-wide dnsmasq? [closed]

I'm trying to get rid of the NetworkManager's dnsmasq instance and configure a separate service. I've found this configuration file in /etc/dnsmasq.d: cat /etc/dnsmasq.d/network-manager # Tell any ...
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Using Host DNS resolution in Docker Containers

I think this is one of the widely discussed problem in SO Network. Most of the solutions are either out-dated or stale suggestions with latest Ubuntu (21.04)/Systemd changes. Problem: VPN Changes from ...
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Ubuntu Server 20.04 running Apache2 Webserver; Possible DNS issue?

I have a rather unique problem, or at least, I haven't been able to find an answer after a couple days of troubleshooting. I am running a Windows 10 host with two Virtual Machines: One is Ubuntu ...
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How to set two services as alternative to each other?

I'm using unbound instead of the normal resolver on a development server that I have unfortunately - it crashes many times and service do not start Ubuntu has it's own resolver as a service systemd-...
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Ubuntu 20.04 DNS 100% Packet loss despite no changes to Router or PC

First time asking a question on this forum. So I was using a dell Inspiron 5547 with Ethernet. Recently I had to change my router’s location so I had to switch from Ethernet to 5ghz WiFi. Now I am ...
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Ubuntu 20.04 DNS 100% Packet loss. Able to connect to LAN but not WAN

First time asking a question on this forum. So I was using a dell Inspiron 5547 with Ethernet. Recently I had to change my router’s location so I had to switch from Ethernet to 5ghz WiFi. Now I am ...
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Failed to start systemd-resolved.service . systemd-resolved.service: Failed with result 'resources'. [1]: Failed to start Network Name Resolution

Main Issue is: # systemctl status systemd-resolved.service systemd-resolved.service - Network Name Resolution Loaded: loaded (/lib/systemd/system/systemd-resolved.service; enabled; vendor preset: ...
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Can't workout what is incorrect after hours of looking over

Cant figure out what is wrong with my bind9 zones after hours of looking over the files. upon running sudo named-checkconf /etc/bind/named.conf.options i get the following output /etc/bind/zones....
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Wine 5.0 internet connects only in browsers

I have wine 5.0. 10:50:45 j0 wormball@wormball-desktop:~$ wine --version wine-5.0 (Ubuntu 5.0-3ubuntu1) 10:55:36 j0 wormball@wormball-desktop:~$ wine64 --version wine-5.0 (Ubuntu 5.0-3ubuntu1) One ...
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how to turn on dnssec on ubuntu 20.04 as client via systemd-resolved

I want to turn on dnssec validation on ubuntu 20.04 as a normal client. When I do dig +dnssec on my router as name server it returns a rrsig. I assume that this means, that the router is capable of ...
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Ubuntu captive portal doesn't work on certain wifi

I'm on 20.04.2 LTS, and I'm noticing that while wifi works for certain captive portals (Starbucks, etc), it doesn't work on other captive portals where my phone always works. When I dig into the issue,...
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Cannot access internet through ethernet on freshly installed Ubuntu

I just installed ubuntu 18.04 and cannot get access through internet through ethernet cable Here are the command I already tried to get an idea about the problem. Is enp0s25 the name of the ethernet ...
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Purged resolvconf, now I can't access the internet

I am using Lubuntu 20.04 I read a bunch of questions and followed a suggestion to purge resolvconf: apt-get remove --purge resolvconf after that I tried this: wget 141.30.13.20/ubuntu/pool/main/r/...
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what do I need to do on all hosts after setting up internal DNS

this must be a dumb question. I just setup a Raspberry Pi running DietPi as an internal DNS server. What do I need to do for the hosts in my network to use it?
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Proxy failing because system resolves it using local DNS instead of VPN (Ubuntu 20.04)

I am using an VPN over openconnect through NetworkManager. I also have a proxy server whose configuration is reachable via VPN (at http://wpad/wpad.dat). Sporadically, when I connect to VPN it fails ...
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Configure DNS for multiple subnets

I have a question. is it possible to set up a DNS server for multiple subnets to listen on? for example say you have a primary DNS server and 3 secondary. The primary has an IP address of 192.160.0.4 ...
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Ping and web requests have slow “startup” yet DNS, latency and speed tests are fast?

So the key symptom that makes me suspicious is that ping takes about a second or so to start printing when I run it on Ubuntu and starts almost immediately on an OSX laptop (I don't have ubuntu on a ...
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Can't ping or access specific website

I have tried pinging this website: www.epfl.ch or accessing it in my browser on ubunut but I can't. I know as a fact that the website is running since I can access it from my android phone. Also if I ...
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Ubuntu reinstalled, but DNS problem still persists

I'm using Ubuntu 20.04 and I encountered "ERR_NAME_NOT_RESOLVED", "DNS_probe_finished_bad_config", "DNS PROBE FINISHED NXDOMAIN" errors and tried lots and lots of fixes ...
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This configuration file is essential to DNS resolution?

# /etc/nsswitch.conf # # Example configuration of GNU Name Service Switch functionality. # If you have the `glibc-doc-reference' and `info' packages installed, try: # `info libc "Name Service ...
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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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How to set up a local DNS-over-TLS service for private LAN and Android devices

Goal: Allow my Android devices to see my local LAN DNS names I'd like to set up a local DNS-over-TLS resolver (Ubuntu or RPi) to support my non-rooted Android devices to resolve my local systems. ...
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How can I tell what app, script, or service is responsible for changing resolv.conf?

I am aware that DNS and other name resolution is controlled most proximately by /etc/resolv.conf, and that resolvconf / resolvectl / systemd-resolve is most proximately responsible for the contents of ...
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No internet access after upgrading to lubuntu 21.04

I have upgraded my lubuntu from 20.10 to 21.04 and then I have no access to internet even though my laptop is connected to wifi. I have tried to set dns in /etc/resolv.conf but to no avail. Some ...
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Ubuntu 20.04 lazy DNS resolver won't chase down answer

When I try to ping a resource on a LAN (resolvable by a public DNS server which correctly returns RFC 1918 addresses) I'm unable to get an answer. It seems that in this case, my local stub resolver is ...
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Random DNS resolution outages, no idea what to try next. (20.04.02)

For the past 3 months, I have been struggling with a random issue on my homeserver where DNS resolution drops for a brief period of time (10-60 seconds) for absolutely no reason. Pinging via hostname ...
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How to change currently used DNS server

My network setup has multiple DNS servers which are set via DHCP: 192.160.1.100 This is a PiHole with some local DNS records entries as well. These local records do also exist on external DNS ...
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How to add subdomains by defining new zones in a local DNS server

I have a local server which I am managing multiple VMs with Qemu-KVM under ubuntu 18.04. Local server has already a static IP and a domain name given from our company IT, say the domain name main....
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166 views

How to disable 127.0.0.53 as DNS?

For some reason, my DNS seems to be set to 127.0.0.53. It's not really a problem, since my local (i.e. on my laptop) DNS seems to redirect DNS requests to the default gateway. But I would like it to ...
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How to permanently save the content of /etc/resolv.conf

As I mentioned in the title, ctrl+s doesn't permanently save the content of that file, if I rebooted my machine I lost all the configuration I did in there, an help, please.
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hosting website my own PC “Ubuntu Server” DMZ

i got curious about turning my local ubuntu server for my personal website i set DMZ to see my ubuntu server and in domain registrar i set my IP and NS i set with bind9... however i can only see my ...
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Ubuntu 16.04 Ethernet connected but no internet access

I have an ubuntu device that is connected to ethernet "eth0" but no internet access. below is the output for nmcli device show eth0 GENERAL.DEVICE: eth0 GENERAL.TYPE: ...
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Wi-Fi router gateway IP adding as nameserver IP in resolv.conf only works for Pulse secure VPN connectivity

I am using Ubuntu 18.04.5 LTS and trying to connect Pulse secure VPN with default nameserver entries in below resolv.conf file, but unable to connect, it gets connected for second or 2 seconds and ...
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Continuous “Temporary failure resolving repositories”

Since I moved country (i.e. to say different location, new network, etc. but same machine) I have problems updating the package list. It does not matter if I run sudo apt-get update or sudo apt update ...
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Installed 18.04 Server and netplan was NOT installed

Installed 18.04 on an older Dell server. Netplan was not installed nor was the /etc/netplan directory created. I attempted to update the /etc/network/interfaces file with the DNS nameservers (I used ...

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