Hi,
NSD 3.2.21 is available:
http://www.nlnetlabs.nl/downloads/nsd/nsd-3.2.21.tar.gz
sha1 dea969f8a03a98723489dda68041496ced464cb8
pgp http://www.nlnetlabs.nl/downloads/nsd/nsd-3.2.21.tar.gz.asc
Fix potential segfault in zone transfer corner case.
NSD 3 is end of life and support stops on May 20th, 2016.
3.2.21