Why MAC address has changed after reboot?

Solution Unverified - Updated -

Issue

After system reboot MAC address of interface has changed.

Note: This solution covers only cases, when MAC address of one or more devices has changed across reboot. What it doesn't cover are cases in which all MAC addresses stay the same but networking device names have been changed instead. For this type of problems I'd suggest further reading on network persistent naming in RHEL7 and RHEL6

Environment

Red Hat Enterprise Linux 5
Red Hat Enterprise Linux 6
Red Hat Enterprise Linux 7

Subscriber exclusive content

A Red Hat subscription provides unlimited access to our knowledgebase of over 48,000 articles and solutions.

Current Customers and Partners

Log in for full access

Log In
Close

Welcome! Check out the Getting Started with Red Hat page for quick tours and guides for common tasks.