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

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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