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Cisco Bug: CSCun71301 - ipv6_address_best_source returns deprecated adr even if preferred exists

Last Modified

Apr 18, 2019

Products (81)

  • Cisco IOS
  • Cisco 819 Hardened Integrated Services Router
  • Cisco 861W Integrated Services Router
  • Cisco 1905 Serial Integrated Services Router
  • Cisco 812 CiFi Integrated Services Router
  • Cisco 886VA-CUBE Integrated Services Router
  • Cisco C897VA Integrated Services Router
  • Cisco 881SRSTW Integrated Services Router
  • Cisco 2951 Integrated Services Router
  • Cisco 886VAG 3G Integrated Services Router
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Known Affected Releases

15.4(1)T1

Description (partial) 

Symptom: A higher layer app such as LISP ends up using a deprecated IPv6 address as returned by the IPv6 service even if a valid address exists for an interface.
Conditions: This symptom occurs when multiple IPv6 addresses are available on an interface with the lexicographically first address being deprecated.
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