Switch 1:

enable
configure terminal

hostname S1
no ip domain-lookup
enable secret class

line console 0
password cisco
login
exit

line vty 0 4
password cisco
login
exit

service password-encryption
banner motd $ Authorized Users Only! $

interface range f0/1-4, f0/7-24, g0/1-2
shutdown
exit

end

copy running-config startup-config

switch 2:

enable
configure terminal

hostname S2
no ip domain-lookup
enable secret class

line console 0
password cisco
login
exit

line vty 0 4
password cisco
login
exit

service password-encryption
banner motd $ Authorized Users Only! $

interface range f0/1-4, f0/7-17, f0/19-24, g0/1-2
shutdown
exit

end

copy running-config startup-config

Router 1:

enable
configure terminal

hostname R1
no ip domain-lookup
enable secret class

line console 0
password cisco
login
exit

line vty 0 4
password cisco
login
exit

service password-encryption
banner motd $ Authorized Users Only! $

ipv6 unicast-routing

interface g0/0/1
ipv6 address fe80::1 link-local
ipv6 address 2001:db8:acad:1::1/64
no shutdown
exit

interface g0/0/0
ipv6 address fe80::1 link-local
ipv6 address 2001:db8:acad:2::1/64
no shutdown
exit

ipv6 route ::/0 2001:db8:acad:2::2

ipv6 dhcp pool R1-STATELESS
dns-server 2001:db8:acad::254
domain-name STATELESS.com
exit

interface g0/0/1
ipv6 nd other-config-flag
ipv6 dhcp server R1-STATELESS
exit

ipv6 dhcp pool R2-STATEFUL
address prefix 2001:db8:acad:3:aaaa::/80
dns-server 2001:db8:acad::254
domain-name STATEFUL.com
exit

interface g0/0/0
ipv6 dhcp server R2-STATEFUL
exit

end

copy running-config startup-config

Router 2:

enable
configure terminal

hostname R2
no ip domain-lookup
enable secret class

line console 0
password cisco
login
exit

line vty 0 4
password cisco
login
exit

service password-encryption
banner motd $ Authorized Users Only! $

ipv6 unicast-routing

interface g0/0/0
ipv6 address fe80::2 link-local
ipv6 address 2001:db8:acad:2::2/64
no shutdown
exit

interface g0/0/1
ipv6 address fe80::2 link-local
ipv6 address 2001:db8:acad:3::1/64
no shutdown
exit

ipv6 route ::/0 2001:db8:acad:2::1

interface g0/0/1
ipv6 nd managed-config-flag
ipv6 dhcp relay destination 2001:db8:acad:2::1 g0/0/0
exit

end

copy running-config startup-config