IPv6 ACLs are very similar to IPv4 ACLs in both operation and configuration. Being familiar with IPv4 access lists makes IPv6 ACLs easy to understand and configure.

In IPv4 there are two types of ACLs, standard and extended. Both types of ACLs can be either numbered or named ACLs.

With IPv6, there is only one type of ACL, which is equivalent to an IPv4 extended named ACL. There are no numbered ACLs in IPv6. To summarize, IPv6 ACLs are:

An IPv4 ACL and an IPv6 ACL cannot share the same name.