Why do I see unreachable routes in the IPv6 routing table?

Solution Verified - Updated -

Issue

  • Why do I see unreachable routes in the IPv6 routing table?
unreachable ::/96 dev lo  metric 1024  error -101 mtu 16436 advmss 16376 hoplimit 4294967295
unreachable ::ffff:0.0.0.0/96 dev lo  metric 1024  error -101 mtu 16436 advmss 16376 hoplimit 4294967295

Environment

  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • IPv6

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