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recklessswing

Member

From: Türkiye

Registered: 2020-12-18

Posts: 97  

MAC address changes every reboot

I don't want this, I do DHCP leases based on MAC, and it changes every time. How to prevent this? The device is Seagate Personal Cloud, armhf NAS device.

pcalvert

Member

Registered: 2017-05-15

Posts: 214  

Re: MAC address changes every reboot

Wired or wireless connection? Is Network Manager being used?

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fanderal

Member

Registered: 2017-01-14

Posts: 80  

Re: MAC address changes every reboot

DHCP (Dynamic Host Configuration Protocol) is where your ISP assigns a new IP address every time you connect/reconnect online. A static IP is where you assign the IP address, and it remains the same across reboots and every time you connect/reconnect online. Your ISP may/may not have hoops to jump through for a static IP.

DHCP vs Static IP: Which One Is Better?
https://community.fs.com/article/dhcp-v … ences.html

Linux Static IP Address Configuration
https://www.cyberciti.biz/faq/linux-con … -tutorial/

Network Configuration - Manually
https://wiki.debian.org/NetworkConfigur … e_manually

rolfie

Member

Registered: 2017-11-25

Posts: 1,169  

Re: MAC address changes every reboot

Seagate Personal Cloud, armhf NAS device

Maybe this device has some internal setting that keeps it from changing the MAC.

Defective_byDesign

Member

Registered: 2024-10-30

Posts: 1  

Re: MAC address changes every reboot

if the problem is changing MAC address every time, maybe you have installed something like macchanger on the machine.

berni51

Member

From: Middle of Germany

Registered: 2018-12-20

Posts: 95  

Website

Re: MAC address changes every reboot

I could solve this problem as follows:

Create the a new udev rule:

-- Add a new file /etc/udev/rules.d/75-static-mac

-- write
ACTION=="add", SUBSYSTEM=="net", ATTR{dev_id}=="0x0", RUN+="/usr/bin/iplink set dev %k address XX:XX:XX:XX:XX:XX"
into the new file.

-- Replace XX:XX:XX:XX:XX:XX with your current mac address

Regards
Berni

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