Planning an ACL application
Before creating and implementing ACLs, define the policies you want your ACLs to enforce and understand how the ACL assignments will impact your network users.
NOTE:
IPv6 traffic entering the switch on a given interface
is filtered by the ACLs configured for inbound traffic on that interface.
For this reason, an inbound packet is denied (dropped) if it has a
match with an implicit (or explicit) deny ipv6 any any
in any of the inbound ACLs applied to the interface.