`scopebits` indicates how many bits from the subnet provided in the question (originally from edns-subnet) were used in determining this answer. This can aid caching (although PowerDNS does not currently use this value). The `auth` field indicates whether this response is authoritative; this is for DNSSEC. In the `auth` field, use 0 for non-authoritative or 1 for authoritative.
-For api-versions 1 and 2, the two new fields fall back to default values. The default value for scopebits is 0. The default for auth is 1 (meaning authoritative).
+For abi-versions 1 and 2, the two new fields fall back to default values. The default value for scopebits is 0. The default for auth is 1 (meaning authoritative).
## Sample perl backend
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