Which feature is unique to IPv6 ACLs when compared to those of IPv4 ACLs?

Which feature is unique to IPv6 ACLs when compared to those of IPv4 ACLs?

• the use of wildcard masks
• an implicit deny any any statement
• the use of named ACL statements
• an implicit permit of neighbor discovery packets
  

  Answers Explanation & Hints: One of the major differences between IPv6 and IPv4 ACLs are two implicit permit statements at the end of any IPv6 ACL. These two permit statements allow neighbor discovery operations to function on the router interface.