Update to 40. From the changelog:

- Added CurveDNS support for all servers. curvedns-keygen available.

net/djbdnscurve6/Makefile

@@ -1,6 +1,6 @@
-# $NetBSD: Makefile,v 1.18 2021/08/04 13:33:21 schmonz Exp $
+# $NetBSD: Makefile,v 1.19 2021/10/21 22:30:23 schmonz Exp $
 
-DISTNAME=		djbdnscurve6-38
+DISTNAME=		djbdnscurve6-40
 CATEGORIES=		net
 MASTER_SITES=		https://www.fehcom.de/ipnet/djbdnscurve6/
 EXTRACT_SUFX=		.tgz

net/djbdnscurve6/PLIST

@@ -1,7 +1,8 @@
-@comment $NetBSD: PLIST,v 1.2 2021/02/17 19:52:22 schmonz Exp $
+@comment $NetBSD: PLIST,v 1.3 2021/10/21 22:30:23 schmonz Exp $
 bin/axfr-get
 bin/axfrdns
 bin/axfrdns-conf
+bin/curvedns-keygen
 bin/dnscache
 bin/dnscache-conf
 bin/dnsfilter
@@ -39,6 +40,7 @@ man/man5/tinydns-log.5
 man/man8/axfr-get.8
 man/man8/axfrdns-conf.8
 man/man8/axfrdns.8
+man/man8/curvedns-keygen.8
 man/man8/dnscache-conf.8
 man/man8/dnscache.8
 man/man8/rbldns-conf.8

net/djbdnscurve6/distinfo

@@ -1,8 +1,8 @@
-$NetBSD: distinfo,v 1.10 2021/10/07 14:41:22 nia Exp $
+$NetBSD: distinfo,v 1.11 2021/10/21 22:30:23 schmonz Exp $
 
-RMD160 (djbdnscurve6-38.tgz) = 4a14c949bbcadb362f566d9909dfd2e8d4cd997f
-SHA512 (djbdnscurve6-38.tgz) = 05cec8f2524f96c81ae83acda2b187cadfe3fd3f6f734644ebe97dedb178b5aefc3eaa8f7bacd60bbdaaee22c67172cbda8a7b7486e407fe030349f6597959a6
-Size (djbdnscurve6-38.tgz) = 122880 bytes
+RMD160 (djbdnscurve6-40.tgz) = b499339a785d7a398a694295c2a243eadff0b537
+SHA512 (djbdnscurve6-40.tgz) = 67b8eab9750c2269aab2a24255e1523e026f5baff2ac77a08a22107121d37ccae03528aaa8f80150bb01ab15868184e1f77cf934e111fac03b945a51a7880004
+Size (djbdnscurve6-40.tgz) = 122880 bytes
 SHA1 (patch-src_Makefile) = ecc0360808f7fb2c73705eb9f3b98dd7ffdbc1f0
 SHA1 (patch-src_dnscache-conf.c) = 890bbdf7f803bd0bb0a9371d0a82298b091117eb
 SHA1 (patch-src_hier.c) = 3aa4172b384b4b3e5ad5621ec790d64892fe71b6