/interface 6to4 add local-address=10.66.101.1 name=6to4-002-MORRINHOS-CONCENTRADOR remote-address=10.66.101.2/ip firewall filter add action=accept chain=input comment=!::ACCEPT-INPUT-6TO4 dst-address-list=REDE-PRIVADA protocol=ipv6-encap src-address-list=REDE-PRIVADA