Just add direct-ip support for http://tsung.erlang-projects.org/dist/tsung-1.6.0.tar.gz, that's all.
More details : http://www.blogjava.net/yongboy/archive/2016/07/28/431354.html
This document gives pointers for information on this package which is distributed under the GNU General Public License version 2 (see file COPYING).
Tsung is multi-protocol distributed load testing tool.
It can be used to test the scalability and performances of IP based client/server applications (supported protocols: HTTP, WebDAV, SOAP, PostgreSQL, MySQL, LDAP, MQTT, AMQP and Jabber/XMPP)
A User's manual is available : http://tsung.erlang-projects.org/user_manual/
Join the mailing-list: https://lists.process-one.net/mailman/listinfo/tsung-users
or use the tracker https://github.com/processone/tsung/issues