Why is my server responding to arp requests from the wrong interface on Red Hat Enterprise Linux ?

Solution Verified - Updated -


  • On a system with two NIC's, using arpwatch we observe the IP address changing over the network interfaces:

    arpwatch: new station 0:f:20:6b:b2:5arpwatch: new station 0:f:20:6b:b2:5
    arpwatch: changed ethernet address 0:f:20:6b:b2:4 (0:f:20:6b:b2:5)
    arpwatch: flip flop 0:f:20:6b:b2:5 (0:f:20:6b:b2:4)
    arpwatch: flip flop 0:f:20:6b:b2:4 (0:f:20:6b:b2:5)
    arpwatch: flip flop 0:f:20:6b:b2:5 (0:f:20:6b:b2:4)


  • Red Hat Enterprise Linux All version
  • Multiple network interfaces on different subnets

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