Which configuration implements an ingress traffic filter on a dual-stack ISR border router to prevent attacks from the outside to services such as DNSv6and DHCPv6?
A. !
ipv6 access-list test
deny ipv6 FF05::/16 any
deny ipv6 any FF05::/16
! output omittedpermit
ipv6 any any
!
B. !
ipv6 access-list test
permit ipv6 any FF05::/16
! output omitted
deny ipv6 any any
!
C. !
ipv6 access-list test
deny ipv6 any any eq dns
deny ipv6 any any eq dhcp
! output omitted
permit ipv6 any any
!
D. !
ipv6 access-list test
deny ipv6 any 2000::/3
! output omitted
permit ipv6 any any
!
E. !
ipv6 access-list test
deny ipv6 any FE80::/10
! output omitted
permit ipv6 any any
!
