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Cisco Bug: CSCup90494 - Semaphore unlock error TB with BB regresn with XE3.13 from IPv6 int sem

Last Modified

Dec 21, 2019

Products (17)

  • Cisco IOS
  • Cisco ASR 901-6CZ-F-D Router
  • Cisco ASR 901-4C-FT-D Router
  • Cisco ME 3600X-24TS-M Switch
  • Cisco ASR 901-6CZ-F-A Router
  • Cisco ASR 901-6CZ-FT-A Router
  • Cisco ASR 901-12C-FT-D Router
  • Cisco ME 3600X-24CX-M Switch
  • Cisco 7600 Series Route Switch Processor 720 with Multilayer Switch Feature Card
  • Cisco ASR 901-6CZ-FT-D Router
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Known Affected Releases

15.3(3)S 15.4(2)S0.1

Description (partial)

The trace-backs are seen 
Sep 17 20:29:30.454 EDT: %IPV6_INTF-3-INTERNAL: [PPP Events] Semaphore lock error in
ipv6_idb_protocol_change - owner L2TUN Application Manager -Process= "PPP Events", ipl= 0, pid= 574

The issue us seen with proficle 12b having 64K L2TP sessions.
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