DnsServer/CHANGELOG.md

Technitium DNS Server Change Log

Version 5.4

Release Date: 18 October 2020

• Implemented QNAME randomization feature draft-vixie-dnsext-dns0x20.
• Fixed bug causing infinite loop in certain conditions when using UDP as transport.
• Fixed bug in DNS cache querying which caused the server to make unneeded queries when performing recursive resolution.
• Added Create PTR Zone option when adding A or AAAA records.
• Fixed issues with DHCP scope selection when using relay agent.
• Implemented changes to allow changing DHCP scope IP allocation from dynamic to reserved and vice versa.
• Updated DHCP scope to allow specifying Next Server Address for use with TFTP for booting.
• Multiple other minor bug fixes and improvements.

Version 5.3

Release Date: 26 September 2020

• Fixed issues with DHCP server that caused it to not work correctly with relay agents.
• Updated DHCP server to support multiple scopes to work on a single network interface allowing it to provide different options for groups of devices.
• Multiple other minor bug fixes and improvements.

Version 5.2

Release Date: 6 September 2020

• Added feature to allow using certbot to renew TLS certificates automatically when using DNS-over-HTTPS and DNS-over-TLS.
• Fixed issue in DHCP server that caused thread to block by implementing async methods.
• Fixed bug in DNS client that caused QTYPE mismatch due to QNAME minimization.
• Fixed issues in DNS-over-HTTPS client related to retries and http error handling.
• Multiple other minor bug fixes and improvements.

Version 5.1

Release Date: 29 August 2020

• Implemented async IO to allow the DNS server handle much higher concurrent loads.
• Implemented independent thread pools for DNS web service and recursive resolver.
• Fixed bug in block list downloader that caused 0 byte file downloads.
• Fixed bug in DHCP server in creating reverse zone.
• Multiple other minor bug fixes and improvements.

Version 5.0.2

Release Date: 18 July 2020

• Fixed issue of missing port for "This Server" in DNS Client.
• Added domain name that was blocked in the TXT record.
• Fixed bugs in CNAME cloaking implementation.
• Upgraded .NET Framework version to v4.8.
• Multiple other minor bug fixes and improvements.

Version 5.0.1

Release Date: 6 July 2020

• Fixed serialization bug for TXT records.
• Fixed issue with reading DnsDatagram for DoH POST requests.
• Fixed bug in json serialization of DnsDatagram for DoH json format.
• Fixed bug in RTT calculation for DoH json Connection.

Version 5.0

Release Date: 4 July 2020

• DNS Server local end points support to allow specifying alternate ports for UDP and TCP protocols.
• DNS Server performance issues caused by thread contention fixed.
• CNAME cloaking implemented to block domain names that resolve to CNAME which are blocked.
• New Block List zone implementation that uses very less memory allowing to load block lists with millions of domain names even on a Raspberry Pi with 1GB RAM.
• QNAME minimization support in recursive resolver draft-ietf-dnsop-rfc7816bis-04.
• ANAME propriety record support to allow using CNAME like feature at zone root.
• Added primary zones with NOTIFY implementation RFC 1996.
• Added secondary zones with NOTIFY implementation RFC 1996.
• Added stub zones with feature to override records.
• Added conditional forwarder zones with all protocols including DNS-over-HTTPS and DNS-over-TLS support.
• Conditional forwarder zones with feature to override records.
• Conditional forwarder zones with support for multiple forwarders with different sub domain names.
• ByteTree based zone tree implementation which is a complete lock-less and thread safe tree allowing concurrent read and write operations.
• Fixed bug in parsing large TXT records.
• DNS Client with internal support for concurrent querying. This allows querying multiple forwarders simultaneously to return fastest response of all.
• DNS Client with support to import records via zone transfer.
• Multiple other bug fixes in DNS and DHCP modules.