--- title: "Defining a named.conf ACL for 'any IPv6' address" slug: "aa-00363" description: "Is there a built-in ACL for named.conf that is for any IPv6 address? You can define one." updated: 2018-10-16T18:44:05Z published: 2018-10-16T18:44:05Z canonical: "kb.isc.org/aa-00363" --- > ## Documentation Index > Fetch the complete documentation index at: https://kb.isc.org/llms.txt > Use this file to discover all available pages before exploring further. # Defining a named.conf ACL for 'any IPv6' address ### Question: Is there a built-in ACL for `named.conf` that is for any IPv6 address? ### Answer: The following ACL definitions are for all IPv6 and all IPv4 addresses respectively: ``` acl any6 { ::0/0; }; acl any4 { 0.0.0.0/0; }; ```