Hi,
NSD 3.2.21rc1 release candidate 1 prerelease is available:
http://www.nlnetlabs.nl/downloads/nsd/nsd-3.2.21rc1.tar.gz
sha1 87c89f2ee062dabe5882a2668d68911b326d244e
pgp http://www.nlnetlabs.nl/downloads/nsd/nsd-3.2.21rc1.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