Why IPv6 link-local address are marked with "tentative dadfailed" over bond devices in latest RHEL versions?

Solution Verified - Updated -

Issue

  • After an upgrade from RHEL 6.6 to 6.7 several bond interfaces shows tentative dadfailed
  • ip addr command show tentative dadfailed for link-local address in RHEL7.2 with Active-backup bond modes.

Environment

  • Red Hat Enterprise Linux 6.7
  • Red Hat Enterprise Linux 6.8 Beta 1
  • Red Hat Enterprise Linux 7.2

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