djbdnscurve6

is a fork of Dan J. Bernstein's djbdns.

History

• Version 2: djbdnscurve6-00 until -29:
  • qlibs based
  • curvedns (based on NaCl)
  • slashpackage installation. djbdnscurve6-32 to -39:
  • fehQlibs based,
  • IPv6 reverse-anycasting,
  • siphash for dnscache,
  • TLSA records for tinydns,
  • DKIM records for tinydns.
• Version 3: djbdnscurve-40 - djbdnscurve-47:
  • supports DNSCurve for all servers.
• Version 4: djbdnscurve-48++:
  • libsodium as base,
  • DNS64 records for tinydns,
  • optional EDNS(0) OPT Pseudo Records for dnscache queries.

Features

• IPv6 capabilites based on fehQlibs allowing the use of compactified IPv6 and LLU addresses.
• Support for TLSA records according to RFC 6698 for tinydns.
• Support for DKIM records according to RFC 6376 for tinydns and DNS TXT lookup.
• EDNS(0) support (RFC 6891) for queries and responses.
• DNS64 record queries are now honored (RFC 6147).
• CurveDNS secured query/response for dnscache.
• CurveDNS enabled servers: tinydns, rbldns, walldns. based on NaCl/libsodium applying and improving Matthew Dempsky's patch.
• rbldns supporting IPv6 addresses.
• Multihoming & dualstack capabilities for the servers.
• Miscellaneous improvements in particular for dnscache.
• Siphash cache for dnscache.
• Authoritative DNS responses in split-horizon manner evaluating IP client addresses in given CIDR format.
• Installation accordingly to the slashpackage convention.

Requirements

djbdnscurve6 requires

• fehQlibs (basics and IP socket connectivity).
• libsodium or NaCl for encryption/decryption services.
• daemontools for startup and environment setting.
• systemd or others (runit, s6) can be used with caution.

Packages removed

• pickdns has been removed.

User Interface changes

• Due to IPv6 support, the tinydns data file uses a '|' and not the usual ':' as delimitor.
• Unlike Felix von Leitner's implementation, IPv6 notation is given by compactified addresses.

Unfinished features

• tinydns is UDP only and does not provide DNSSec features.
• rts.test has not been fully adjusted yet (it is IPv4 only),

Erwin Hoffmann, April 2026.