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Description of problem:

  The whinge message when the arping check fails a Duplicate Address Detect
gives the IP involved but not the MAC of the responder.  It would aid the
admin if this information was output.


Version-Release number of selected component (if applicable):

  RHEL-6/initscripts/9.03.40/2.el6_5.1/initscripts-9.03.40/sysconfig/network-scripts/ifup-eth#244

How reproducible:

  Always

Steps to Reproduce:
1. Set up two systems with a single IP
2. Bring up interface
3.

Actual results:
  "Error, some other host already uses address 10.105.50.58."


Expected results:
  Anything giving the responding MAC as well.  Plain output from arping might
suffice (it is currently run with a silencing switch; perhaps remove this and
divert the output to a variable for use in the fail-case).  Possibly some
massaging of the output would be needed.


Additional info:

Sounds reasonable.

https://git.fedorahosted.org/cgit/initscripts.git/commit/?h=rhel6-branch&id=37e2084f437172353744b10cad600710137d87c6

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHBA-2016-0951.html