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--- ubuntu:etc:resolv.conf:identifying_which_utility_currently_controls_your_etc_resolv.conf [2020/05/13 17:43] – created peter
+++ ubuntu:etc:resolv.conf:identifying_which_utility_currently_controls_your_etc_resolv.conf [2020/07/15 09:30] (current) – external edit 127.0.0.1
@@ Line 1: / Line 1: @@
 ====== Ubuntu - etc - resolv.conf - Identifying which utility currently controls your /etc/resolv.conf ======
+Several DNS-related programs want to automatically manage the DNS name server and resolution configuration file at /etc/resolv.conf.
+There are quite a few different tools that fight to control a Linux system’s DNS resolution configuration file including /etc/resolv.conf including netconfig, NetworkManager, resolvconf, rdnssd, and systemd-resolved.
+Most of these tools are oblivious to each other’s presence which can cause DNS resolution problems.
+----
+===== Identifying which utility currently controls your /etc/resolv.conf =====
 <code bash>
@@ Line 19: / Line 29: @@
 # Third party programs must not access this file directly, but only through the
 </code>
 <WRAP info>
@@ Line 34: / Line 45: @@
 lrwxrwxrwx 1 root root 39 Aug  9  2019 /etc/resolv.conf -> ../run/systemd/resolve/stub-resolv.conf
 </code>
+As a last resort, you can check your init system to see if any of the programs mentioned in this article are running.
+If you can’t identify any management programs using these methods, chances are you should be in control over the resolv.conf file and your system’s DNS resolution.
 </WRAP>