Log Message:
Knot DNS 2.3.0 (2016-08-09)
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Bugfixes:
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 - No wildcard expansion below empty non-terminal for NSEC signed zone
 - Avoid multiple loads of the same PKCS #11 module
 - Fix kdig IXFR response processing if the transfer content is empty
 - Don't ignore non-existing records to be removed in IXFR

Improvements:
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 - Refactored semantic checks and improved error messages
 - Set TC flag in delegation only if mandatory glue doesn't fit the response
 - Separate EDNS(0) payload size configuration for IPv4 and IPv6

Features:
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 - DNSSEC policy can be defined in server configuration
 - Automatic NSEC3 resalt according to DNSSEC policy
 - Zone content editing using control interface
 - Zone size limit restriction for DDNS, AXFR, and IXFR (CVE-2016-6171)
 - DNS-over-TLS support in kdig (RFC 7858)
 - EDNS(0) padding and alignment support in kdig (RFC 7830)