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Cisco Bug: CSCtc73123 - IPv6 ACL not matching protocols

Last Modified

Feb 24, 2010

Products (1)

  • Cisco IOS

Known Affected Releases

12.0(32)SY9a 12.0(32)SY10

Description (partial)

Symptom:
Deny Hop By Hop option ACE is not dropping Hop By Hop options packet

Conditions:
The ACE is configured to deny protocol 0 (IPv6 Hop-by-Hop Option).  

GW-LAB#sh ipv6 access-list cisco-test
IPv6 access list cisco-test
    permit icmp any any sequence 10
    deny 0 any any sequence 20
    deny ipv6 any any sequence 30


Even though the customer is sending hop-by-hop options, the deny statement never gets processed.
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