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Cisco Bug: CSCvt88547 - MAC ACL + MAC packet classification could not let IPv6 NS/NA pass through

Last Modified

Sep 10, 2020

Products (58)

  • Cisco Nexus 9000 Series Switches
  • Cisco Nexus 3548-X Switch
  • Cisco Nexus 3548 Switch
  • Cisco Nexus 9516 Switch
  • Cisco Nexus 3636C-R Switch
  • Cisco Nexus 93108TC-FX Switch
  • Cisco Nexus 3132Q-V Switch
  • Cisco Nexus 31108TC-V Switch
  • Cisco Nexus 92160YC-X Switch
  • Cisco Nexus 9396TX Switch
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Known Affected Releases

7.0(3)I7(8) 9.2(4)

Description (partial)

With the configuration of MAC ACL + MAC packet classification, the port will deny IPv6 NS/NA packets. It caused the IPv6 traffic could not go through the port.

Example configuration:
mac access-list test
  statistics per-entry
  10 permit any any 0x86dd  <<<<< ethertype of IPv6
interface Ethernet2/1
  mac port access-group test
  mac packet-classify
  no shutdown


Port is configured with MAC ACL + MAC packet classification.
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