El siguiente ejemplo es entregando un /56 a la onu para que esta entregue al cliente final un /64.

1Script de Router Alestra
/interface bridge
add name=lo
/interface wireless security-profiles
set [ find default=yes ] supplicant-identity=MikroTik
/routing bgp instance
set default as=100 router-id=10.20.30.1
/ip dhcp-client
add disabled=no interface=ether1
/ipv6 address
add address=2001:4860:4860::8888/128 advertise=no comment="DNS GOOGLE" \
interface=lo
add address=3000:aba:1010:1010:1010:2020:101:1 advertise=no interface=ether2
/routing bgp peer
add address-families=ipv6 default-originate=always name=CPE_BM \
remote-address=3000:aba:1010:1010:1010:2020:101:2 remote-as=200
/system identity
set name=CarrierAlestra
/tool romon
set enabled=yes
2 Script de Router Borde Megabit
/interface bridge
add name=lo
/interface wireless security-profiles
set [ find default=yes ] supplicant-identity=MikroTik
/routing bgp instance
set default as=200 router-id=10.20.30.2
/ip dhcp-client
add disabled=no interface=ether1
/ipv6 address
add address=3000:aba:1010:1010:1010:2020:101:2 advertise=no interface=ether2
add address=2906:666:3010:aaaa:bbbb:cccc:ddd:1 advertise=no interface=ether3
/ipv6 route
add distance=1 dst-address=2906:666:3020::/44 gateway=\
2906:666:3010:aaaa:bbbb:cccc:ddd:2
add distance=1 dst-address=2906:666:3030::/44 gateway=\
2906:666:3010:aaaa:bbbb:cccc:ddd:2
/routing bgp network
add network=2906:666:3000::/36 synchronize=no
/routing bgp peer
add address-families=ipv6 name=WAN_IPv6 remote-address=\
3000:aba:1010:1010:1010:2020:101:1 remote-as=100
/system identity
set name=BordeMegabit
/tool romon
set enabled=yes
3Script de Router EncoreUrbi
/interface vlan
add interface=ether6 name=vlan910 vlan-id=910
/interface wireless security-profiles
set [ find default=yes ] supplicant-identity=MikroTik
/ipv6 dhcp-server
add address-pool=POOL_CLIENTES disabled=yes interface=ether6 name=server1
/ipv6 pool
add name=POOL_CLIENTES prefix=2906:666:3030::/44 prefix-length=56
/ppp profile
set *0 dhcpv6-pd-pool=POOL_CLIENTES
/interface pppoe-server server
add disabled=no interface=ether6 service-name=910
/ip dhcp-client
add disabled=no interface=ether1
/ip dns
set servers=2001:4860:4860::8888,2001:4860:4860::8844
/ipv6 address
add address=2906:666:3010:aaaa:bbbb:cccc:ddd:2 advertise=no interface=ether1
add address=::1000:10ff:fe09:1115 from-pool=POOL_CLIENTES interface=ether6
/ipv6 nd
set [ find default=yes ] other-configuration=yes
/ipv6 route
add distance=1 gateway=2906:666:3010:aaaa:bbbb:cccc:ddd:1
/ppp secret
add name=123 password=123 service=pppoe
/system identity
set name=EncoreUrbi
/tool romon
set enabled=yes
4Script de Router Cliente (simulacion de la onu)
/interface pppoe-client
add add-default-route=yes disabled=no interface=ether1 name=pppoe-out1 \
password=123 use-peer-dns=yes user=123
/interface wireless security-profiles
set [ find default=yes ] supplicant-identity=MikroTik
/ipv6 dhcp-server
add address-pool=LAN interface=ether2 name=server1
/ip dhcp-client
add disabled=no interface=ether1
/ip dns
set servers=2001:4860:4860::8888,2001:4860:4860::8844
/ip firewall nat
add action=masquerade chain=srcnat disabled=yes out-interface=*5
/ipv6 address
add address=::5200:ff:fe02:1 eui-64=yes from-pool=LAN interface=ether2
/ipv6 dhcp-client
add interface=pppoe-out1 pool-name=LAN request=prefix
/ipv6 nd
set [ find default=yes ] other-configuration=yes
/system identity
set name=Cliente
/tool romon
set enabled=yes
LABORATORIO EN EVE-NG