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Cisco Bug: CSCuo67770 - Race condition in IPv6 Neighbor Discovery

Last Modified

Mar 17, 2020

Products (6)

  • Cisco IOS
  • Cisco Catalyst 4948E-F Ethernet Switch
  • Cisco Catalyst 4948E Ethernet Switch
  • Cisco Catalyst 4500 Supervisor Engine 6L-E
  • Cisco Catalyst 4500 Supervisor Engine 6-E
  • Cisco Catalyst 4900M Switch

Known Affected Releases


Description (partial)

IOS or IOS-XE may crash due to a race condition while generating IPv6 router advertisements.

IPv6 enabled and IPv6 router solicitations received on an interface and that interface state changes (HSRP flap, configuration change, ...).
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