Need help?

Our experts have had an average response time of 11.7 minutes in August 2021 to fix urgent issues.

We will keep your servers stable, secure, and fast at all times for one fixed price.

DHCP Client Error: mv cannot move – How to fix this error

by | Mar 25, 2021

Stuck with DHCP Client Error: mv cannot move /etc/resolv.conf.dhclient-new to /etc/resolv.conf: Operation not permitted? We can help you.

This error indicates that dhclient (Dynamic Host Configuration Protocol Client) is unable to update the name resolution configuration file /etc/resolv.conf.

We use dhclient command to obtain, renew and release a client’s IP address, subnet mask, default gateway, and DNS servers from a DHCP server.

Here at Bobcares, we often get requests from our customers to fix similar DHCP Client Error as a part of our Server Management Services.

Today let’s see how our Support Techs fix this error for our customers.

How does a typical ‘DHCP Client Error: mv cannot move’ look like

The dhclient command provides a means for configuring one or more network interfaces using the Dynamic Host Configuration Protocol, BOOTP protocol, or if these protocols fail, by statically assigning an address.

The error message is given below:

mv cannot move /etc/resolv.conf.dhclient-new to /etc/resolv.conf: Operation not permitted

Next we will see the cause for this error.

Common Cause of this Error

The dhclient prepares a temporary file with the new nameserver details in /etc/resolv.conf.dhclient-new and then tries to rename it as /etc/resolv.conf.

Generally, it generates an error because /etc/resolv.conf is already bind-mounted and apparently mv is not allowed to do this trick.

/etc/ are the temporary files the DHCP client daemon writes before moving the complete file to /etc/resolv.conf.

This is to keep the consistency of the actual /etc/resolv.conf file if something goes wrong.

Sometimes the DHCP client will not be able to write the /etc/resolv.conf file/is dying, and the temporary files keep behind.

How to fix DHCP Client Error: mv cannot move

Following are the steps that our Support Techs follow to fix this error:

1. Firstly, we must run dhclient as the root user

We can use the following sudo command to run dhclient, enter:

$ sudo dhclient eth0

2. After that we should ensure that /etc/resolv.conf is not write protected

We can use the following lsattr, command to view file attributes:

$ lsattr /etc/resolv.conf


----i------------- /etc/resolv.conf

Generally, we cannot modify a file with the i attribute. We can either delete it or rename it. Also, no link can be created to this file and no data can be written to the file for any user including the root user.

Clear i attribute, enter:

$ sudo chattr -i /etc/resolv.conf

Now run dhclient again to update the file and to obtain a new IP address.

[Need Assistance? We are available 24*7]



In short, we saw how to fix DHCP Client Error: mv cannot move, along with the steps that our Support Techs follow to fix this error.


Never again lose customers to poor server speed! Let us help you.

Our server experts will monitor & maintain your server 24/7 so that it remains lightning fast and secure.


var google_conversion_label = "owonCMyG5nEQ0aD71QM";


Submit a Comment

Your email address will not be published. Required fields are marked *

Privacy Preference Center


Necessary cookies help make a website usable by enabling basic functions like page navigation and access to secure areas of the website. The website cannot function properly without these cookies.

PHPSESSID - Preserves user session state across page requests.

gdpr[consent_types] - Used to store user consents.

gdpr[allowed_cookies] - Used to store user allowed cookies.

PHPSESSID, gdpr[consent_types], gdpr[allowed_cookies]


Statistic cookies help website owners to understand how visitors interact with websites by collecting and reporting information anonymously.

_ga - Preserves user session state across page requests.

_gat - Used by Google Analytics to throttle request rate

_gid - Registers a unique ID that is used to generate statistical data on how you use the website.

smartlookCookie - Used to collect user device and location information of the site visitors to improve the websites User Experience.

_ga, _gat, _gid
_ga, _gat, _gid


Marketing cookies are used to track visitors across websites. The intention is to display ads that are relevant and engaging for the individual user and thereby more valuable for publishers and third party advertisers.

IDE - Used by Google DoubleClick to register and report the website user's actions after viewing or clicking one of the advertiser's ads with the purpose of measuring the efficacy of an ad and to present targeted ads to the user.

test_cookie - Used to check if the user's browser supports cookies.

1P_JAR - Google cookie. These cookies are used to collect website statistics and track conversion rates.

NID - Registers a unique ID that identifies a returning user's device. The ID is used for serving ads that are most relevant to the user.

DV - Google ad personalisation

IDE, test_cookie, 1P_JAR, NID, DV, NID
IDE, test_cookie


These are essential site cookies, used by the google reCAPTCHA. These cookies use an unique identifier to verify if a visitor is human or a bot.