Using Debian testing on XFCE. During the install of the package I approved changing mac address automatically every boot but even with macchanger -r wlp3s0 command it gives me the following error, what can I do to change mac automatically?

[ERROR] Could not change MAC: interface up or insufficient permissions: Operation not permitted

Even if I turn down the network interface with ip command, the problem persists. Maybe I should execute macchanger -r command before network interface is loaded, but do not know how to do it. Can someone help?

there isn't too much information in your post, which might be a reason why no-one answered so far.

i know little of these things and held my tongue, so far.

but i know how to troubleshoot a problem, and provide useful information.
https://wiki.archlinux.org/index.php/Troubleshooting

often it helps to do a web search for the error messge.
the first result (kali forums) looks promising.

1 members found this post helpful.

Well, I managed to change the MAC address at every boot but here came another problem:

After writing the below script, putting it into /etc/init.d, I entered following commands to terminal:

sudo chmod +x /etc/init.d/macchanger.sh
sudo chown root:root /etc/init.d/macchanger.sh
sudo update-rc.d macchanger.sh defaults
sudo update-rc.d macchanger.sh enable

However now when I shutdown it gives two errors: "A stop job is running for LSB: macchanger.sh
A start job is running for Network Manager.

What can be the problem?

SCRIPT:

#!/bin/sh
### BEGIN INIT INFO
# Provides: macchanger.sh
# Required-Start: $network
# Required-Stop: $network
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Short-Description: Change MAC on every boot
# Description: macchanger.sh
### END INIT INFO
sudo ip link set wlp3s0 down
sudo service network-manager stop
sudo macchanger -r wlp3s0
sudo ip link set wlp3s0 up
sudo service network-manager start

Are you running an old Ubuntu ? Because since a while, Ubuntu use systemd as init.

No, I am using Debian Testing (XFCE). I am now aware of systemd is being used mostly. Can someone guide me how to remove the commands I have written, and use do the correct script in systemd?

no you have to do that yourself.

http://forums.debian.net/viewtopic.p...680703#p680705 (yep, it's a double poster)
and
https://wiki.debian.org/systemd
https://wiki.archlinux.org/index.php/Systemd

Thank you, neckbeard.

riiiight...

whatever mis-step i might be guilty of (you don't say), i did not resort to childish name calling.
all 3 links i gave are (or at least can be) relevant to solving your problem.
did you read what debiman answered?