Preview Tool

Cisco Bug: CSCum85923 - 4500/Sup6L-E/15.1(2)SG2 "ipv6 nd raguard" drops Router solicitation

Last Modified

Nov 27, 2020

Products (1)

  • Cisco Catalyst 4000 Series Switches

Known Affected Releases


Description (partial)

Router-solicitation(RS) messages are dropped on the switch port that have IPv6 RA guard enabled. On removing RA guard, RS messages go through. 

Releases tested:

Affected releases: 151-2.SG2 and 152-1.E.bin             

Unaffected releases: 150-2.SG.bin

This symptom occurs when "ipv6 nd raguard" is enabled.
Bug details contain sensitive information and therefore require a account to be viewed.

Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
  • Related Community Discussions
  • Number of Related Support Cases
Bug information is viewable for customers and partners who have a service contract. Registered users can view up to 200 bugs per month without a service contract.