0.0.0.0 does not work with IPv6

[alsyundawy]

If you are using IPv6 or a dual-stack (IPv4 + IPv6) configuration, 0.0.0.0 will not apply to IPv6 connections — you must also include ::

Example for dual-stack (IPv4 + IPv6):

0.0.0.0 domain.tld
:: domain.tld