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Cisco Bug: CSCun04735 - First DHCPv6 advertise dropped with multiple sub-bundle config.

Last Modified

Mar 10, 2017

Products (1)

  • Cisco uBR10000 Series Universal Broadband Routers

Known Affected Releases

12.2(33)SCH2 15.3(3)S

Description (partial) 

Symptom:
Cable modems are stuck at init6(a) when more than 2 bundle sub-interfaces are configured and  Dynamic Message Integrity Check (DMIC) is enabled. Cisco CMTS drops the first advertise message from the cable modem.

Conditions:
This issue occurs on the Cisco CMTS when multiple bundle sub-interfaces are configured and DMIC is enabled, and the cable modem tries to get the IPv6 address that is not on the first bundle sub-interface.
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