Home / server / Questions / 842994
In Process
M. BY
Asked: 2017-04-07 03:35:45 +0800 CST

Resolv.conf reset automatically after reboot to the wrong dns

  • 772

With my ubuntu 16.04, my /etc/resolv.conf change every system start 

cat /etc/resolv.conf  
nameserver 127.0.0.1

Network-manager have the correct dns name server 192.168.1.1
I removed bind9 and all related packages.
No special config on rc folders nor rc.local
No dns-nameserver options with /etc/network/interfaces.

I missed something? What app can change this file automatically?

domain-name-system

3 Answers

  1. Do you use DHCP?

    • Does maybe your DHCP server send wrong nameserver pointers?
    • Do you have a custom dhcp.conf that uses it's own nameserver config and ignores the DHCP server?

    If you don't use DHCP:

    • 0

  2. I can't remember when this started, but resolv.conf is a system generated file.

    Anything (more specifically, static options from previous resolv.conf's) that you want adding to that should be put in /etc/resolvconf/resolv.conf.d/base.

    • 0

  3. Make sure resolvconf service is running, enable it:

    sudo systemctl start resolvconf.service

    then enter this one:

    sudo nano /etc/resolvconf/resolv.conf.d/head

    then add/change the nameservers you want and save, and then modify the resolv.conf and close.

    remember to set your network-manager dns to what you've set in resolv.conf

    • 0