https://ftpmirror.your.org/pub/NetBSD/NetBSD-release-10/src/sys/external/bsd/libnv/?C=M&O=D
Index of /pub/NetBSD/NetBSD-release-10/src/sys/external/bsd/libnv/
index ofpubnetbsdrelease
https://vuxml.freebsd.org/freebsd/93c12fe5-7716-11ef-9a62-002590c1f29c.html
VuXML: FreeBSD -- Integer overflow in libnv
integer overflowfreebsd