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Cisco Bug: CSCtd40754 - ipv6 is not enable in uidb for GRE tunnel interfaces after RP FO

Last Modified

Jan 14, 2017

Products (1)

  • Cisco Carrier Routing System

Known Affected Releases


Description (partial)

 ipv6 is not enabled in uidb for GRE tunnel interfaces after RP FO  done on neighbor router. The customer 
would notice IPv6 traffic loss on tunnel interfaces.
 Rare timing condition seen once.  Unable to reproduce reliably. 
This was obsevered in the following topology:
Router 1 ---- Router 2
When Fail over was done on Router 1, the issue described was see on Router 2 and all the 
tunnel interfaces lost IPv6 connectivity on GRE tunnel interfaces.
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Bug Details Include

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