net-mgmt/nfdump installs libtool created scripts instead of the real binaries. This seems to be more or less a global phenomenon within the ports infrastructure.
You're right, I'll work on a fix for nfdump.
Thanks, fix committed!
A commit references this bug: Author: pi Date: Tue Feb 28 20:02:40 UTC 2017 New revision: 435082 URL: https://svnweb.freebsd.org/changeset/ports/435082 Log: net-mgmt/nfdump: fix installation - install real binaries and library, not libtool scripts PR: 217400 Submitted by: Trond.Endrestol@ximalas.info Changes: head/net-mgmt/nfdump/Makefile