Today, we released version 4.1.26 of the authoritative DNS name server NSD.
This version has DNSTAP support (http://dnstap.info). Use --enable-dnstap for ./configure to turn it on, then in nsd.conf enable the dnstap feature with dnstap-enable: yes and set one or more of dnstap-log-..-messages to yes. And set the dnstap socket path in the config.
The reuseport: yes config option in nsd.conf on FreeBSD 12 can use the SO_REUSEPORT_LB option that performs performance load balancing.
The changezone command for nsd-control allows to change the pattern associated with a zone without downtime for the zone, in one operation. It is otherwise just like a delete and an add for that zone.
Include files from the config file are sorted before inclusion, giving a stable list of included text.
You can get source packages of this version from the downloads page.