Why does 'ifconfig' command outputs the message "Ifconfig uses obsolete kernel interface" ?

Solution Verified - Updated -

Issue

  • Why does 'ifconfig' command outputs the error message "Ifconfig uses obsolete kernel interface"
  • When Infiniband is configured, ifconfig command outputs following messages :
  Ifconfig uses the ioctl access method to get the full address information, which limits hardware addresses to 8 bytes.
  Because Infiniband address has 20 bytes, only the first 8 bytes are displayed correctly.
  Ifconfig is obsolete! For replacement check ip.

Environment

Red Hat Enterprise Linux (RHEL)

Subscriber exclusive content

A Red Hat subscription provides unlimited access to our knowledgebase, tools, and much more.

Current Customers and Partners

Log in for full access

Log In

New to Red Hat?

Learn more about Red Hat subscriptions

Using a Red Hat product through a public cloud?

How to access this content