diff --git a/benchmarks/iperf/Makefile b/benchmarks/iperf/Makefile
index 2797a0458fdc..2b7f8c62036a 100644
--- a/benchmarks/iperf/Makefile
+++ b/benchmarks/iperf/Makefile
@@ -3,6 +3,7 @@
 
 PORTNAME=	iperf
 PORTVERSION=	2.0.10
+PORTREVISION=	1
 CATEGORIES=	benchmarks
 MASTER_SITES=	SF/${PORTNAME}2
 
diff --git a/benchmarks/iperf/files/patch-src-Client.cpp b/benchmarks/iperf/files/patch-src-Client.cpp
new file mode 100644
index 000000000000..9e4e2c8355f1
--- /dev/null
+++ b/benchmarks/iperf/files/patch-src-Client.cpp
@@ -0,0 +1,11 @@
+--- src/Client.cpp.orig	2017-08-09 03:54:14 UTC
++++ src/Client.cpp
+@@ -680,7 +680,7 @@ void Client::Run( void ) {
+ 
+         // store datagram ID into buffer
+ 	if (isSeqNo64b(mSettings)) {
+-	    mBuf_UDP->id      = htonl((reportstruct->packetID & 0xFFFFFFFFFL));
++	    mBuf_UDP->id      = htonl((reportstruct->packetID & 0xFFFFFFFFL));
+ 	    mBuf_UDP->id2     = htonl((((reportstruct->packetID & 0xFFFFFFFF00000000LL) >> 32) | 0x80000000L));
+ 	} else {
+ 	    mBuf_UDP->id      = htonl(((reportstruct->packetID & 0xFFFFFFFFL) | 0x80000000L));