In an Ubuntu 20 or 22 LTS, if I attempt to use a hostname like anyname.localhost it always seems to resolve to IPv6 ::1 address. In an old RHEL 6, if I attempt to use a hostname like anyname.localhost it always seems to resolve to IPv4 127.0.0.1 address. In a MS-Windows or MacOS 12.6 machine, this does not se…
Tag: dns
How to select the interface used to perform a hostname lookup
I am working in an application embedded in a device running Linux and BusyBox. The hardware has 2 communication interfaces: Wi-Fi and 3G. In each connection, the application must try to connect using wi-fi first and, if it fails, the application tries again using 3G. I am forcing the connection to use the sel…
I have a question with option in DNSperf tool in Linux
I tried to use the DNSperf tool that is the benchmark testing tool for an authoritative name server in Linux. This tool has various features to provide the result in many aspects. But I would like to know some options like -c and -q. I tried to observe it from the source code in C. But I don’t get it.
GCP Startup-Script for setting DNS entries RHEL-7
I’m trying to expand my Google Cloud Platform startup-script so that it sets DNS entries. But every time I include these two lines of code the script does not get executed and fails. When I login to the Virtual Machine the commands work fine. The Error message I get is the following: Answer Please inclu…
DNS Resolver does not contain answer
I’m trying to automate some of the tasks with python. I have to chcek if some domains are still in ours DNS servers. So searching through stack i found script with dns.resolver and tryied to suit it to my needs. So, the script looks like this: My domainfile.txt looks like this: And error message i reciv…
can’t access my inherited class attributes
I am working on a project for my job to encode/decode into buffers DNS Records objects in C++. Some records have the same infos, so I created a class Dns message with theses basic infos: The DnsClass and DnsTypes are enum with the differents class/types I use. Then I have my sub-classes for each record, I wil…
Can’t resolve monitoring-influxdb on Kubernetes with heapster and kube-dns
I am trying to get Heapster working on my Kubernetes cluster. I am using Kube-DNS for DNS resolution. My Kube-DNS seems to be set up correctly: kubectl describe pod kube-dns-v20-z2dd2 -n kube-system kubectl describe svc kube-dns -n kube-system kubectl describe ep kube-dns -n kube-system kubectl exec -it busyb…
Linux shell temporary DNS
In a linux shell script, I want to change the dns address temporarily. To do this, I can insert temprary dns address into resolv.conf right after the shell run and remove it before the script ends. That’s it. But the problem is, all every other scripts also hit the address while the script is running. T…
external resolve dns linux bind9 [closed]
Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers. This question does not appear to be about a specific programming problem, a software algorithm, or software tools primarily used by programmers. If you believe the question would be on-topic on another Stack …
DNS server not working in QEMU usermode networking
I am trying to get QEMU 2.8.0 on Windows host to work with my Linux guest with vanilla 2.6.11.12 kernel but it is responding with unknown host. I am using user mode networking (SLIRP). Here’s my qemu network status: And my ifconfig: And my routing table: I am able to ping the router but not the QEMU DNS…