Ativar o roteamento Ipv6

R1(config)# ipv6 unicast-routing
R1(config)# exit
R1# 

Verificar se o SLAAC está ativado

R1# show ipv6 interface G0/0/1 | section Joined
  Joined group address(es):
    FF02::1
    FF02::2
    FF02::1:FF00:1
R1#

Ativar DHCPv6 sem estado em uma interface

R1(config-if)# ipv6 nd other-config-flag
R1(config-if)# end

Validando o DHCPv6 sem estado em uma interface

R1# show ipv6 interface g0/0/1 | begin ND
  ND DAD is enabled, number of DAD attempts: 1
  ND reachable time is 30000 milliseconds (using 30000)
  ND advertised reachable time is 0 (unspecified)
  ND advertised retransmit interval is 0 (unspecified)
  ND router advertisements are sent every 200 seconds
  ND router advertisements live for 1800 seconds
  ND advertised default router preference is Medium
  Hosts use stateless autoconfig for addresses.
  Hosts use DHCP to obtain other configuration.
R1#

Ativar DHCPv6 Stateful em uma interface

R1(config)# int g0/0/1
R1(config-if)# ipv6 nd managed-config-flag
R1(config-if)# ipv6 nd prefix default no-autoconfig
R1(config-if)# end

Passo a passo para configurar DHCPv6 Servidor SEM ESTADO

1º Passo Ativar o roteamento IPV6

R3(config)# ipv6 unicast-routing
R3(config)#

2º Passo Criar um Poll

R1(config)# ipv6 dhcp pool IPV6-STATELESS
R1(config-dhcpv6)#

3º Passo Configurar o pool

R1(config-dhcpv6)# dns-server 2001:db8:acad:1::254
R1(config-dhcpv6)# domain-name example.com
R1(config-dhcpv6)# exit
R1(config)#

4º Passo linkando o Pool com a interface

R1(config)# interface GigabitEthernet0/0/1
R1(config-if)# description Link to LAN
R1(config-if)# ipv6 address fe80::1 link-local
R1(config-if)# ipv6 address 2001:db8:acad:1::1/64
R1(config-if)# ipv6 nd other-config-flag
R1(config-if)# ipv6 dhcp server IPV6-STATELESS
R1(config-if)# no shut
R1(config-if)# end
R1#

Cliente DCHCPv6 SEM ESTADO