Why the IPv6 route is in STALE state?

Solution Verified - Updated -

Issue

  • The IPv6 route in STALE state.
  • IPv6 Neighbor Cache states.
  • What does IPv6 with STALE state mean?
  • IP command shows the following output:

    # ip -6 n s
    fe80::111:1111:1111:1111 dev eth0 lladdr 11:11:11:11:11:11 router STALE
    

Environment

  • Red Hat Enterprise Linux (RHEL)

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