/ip firewall address-list
add address=192.168.0.0/16 list=LAN
add address=172.16.0.0/12 list=LAN
add address=10.0.0.0/8 list=LAN

/ip firewall nat
add action=masquerade chain=srcnat comment="Hairpin NAT" dst-address-list=LAN src-address-list=LAN

以上规则可能不适用启用了VLAN划分了多子网的情况。