The advantage of truncating the nameserver list after a loopback address is that doing so inhibits unnecessary changes to resolv.conf and thus reduces the number of instances in which the update-libc.d/ scripts have to be run. When an interface is brought up or down the local caching nameserver that listens on the loopback address is still

CentOS will wipe out any manual changes made to /etc/resolv.conf periodically. The defaults in Linux are poor in terms of failing over in a reasonable time (query name servers in same order every time, 5 second timeout, 2 retries). Hence, the first DNS in your resolv.conf is essentially critical … Configure a Private Amazon EC2 Instance with a Static DNS Jan 23, 2020 Ubuntu Manpage: resolvconf - manage nameserver information The advantage of truncating the nameserver list after a loopback address is that doing so inhibits unnecessary changes to resolv.conf and thus reduces the number of instances in which the update-libc.d/ scripts have to be run. When an interface is brought up or down the local caching nameserver that listens on the loopback address is still How to make permanent DNS changes to resolv.conf file on May 14, 2019

Domain name resolution - ArchWiki - Arch Linux

resolv.conf is the name of a computer file used in various operating systems to configure the system's Domain Name System (DNS) resolver.The file is a plain-text file usually created by the network administrator or by applications that manage the configuration tasks of the system. The resolvconf program is one such program on FreeBSD or other Unix machines which manages the resolv.conf file. How to Set DNS Nameservers on Ubuntu 18.04 | Linuxize

Replacing /etc/resolv.conf with a symbolic link to manually configure DNS settings NetworkManager does not automatically update the DNS configuration if /etc/resolv.conf is a symbolic link. This section describes how to replace /etc/resolv.conf with a symbolic …

linux - How do I set my DNS when resolv.conf is being Here is an exhaustive list of setups to get back the control of resolv.conf and avoid having it overwritten (how to disable/setup DNS from other location other than resolv.conf) note that resolvconf is an independent program from resolv.conf, also depending on your system/config you may not have one or many of the programs listed here. 1 How to configure resolv.conf - LinuxQuestions.org