Index: head/net/Makefile
===================================================================
--- head/net/Makefile
+++ head/net/Makefile
@@ -1441,6 +1441,7 @@
     SUBDIR += tcpmssd
     SUBDIR += tcpproxy
     SUBDIR += tcpreen
+    SUBDIR += tcprtt
     SUBDIR += tcpsg
     SUBDIR += tcpshow
     SUBDIR += tcpslice
Index: head/net/tcprtt/Makefile
===================================================================
--- head/net/tcprtt/Makefile
+++ head/net/tcprtt/Makefile
@@ -0,0 +1,28 @@
+# $FreeBSD$
+
+PORTNAME=	tcprtt
+DISTVERSION=	g20191022
+CATEGORIES=	net
+
+MAINTAINER=	rs@netflix.com
+COMMENT=	Measures the TCP handshake RTT using the stats(9) statistics framework
+
+LICENSE=	BSD2CLAUSE
+
+USE_GITHUB=	yes
+GH_ACCOUNT=	KlaraSystems
+GH_TAGNAME=	1c857b8bd6e071290d118c96c051fbdf7db40129
+
+PLIST_FILES=	bin/tcprtt man/man8/${PORTNAME}.8.gz
+
+.include <bsd.port.options.mk>
+
+.if ${OPSYS} == FreeBSD && ${OSVERSION} < 1300062
+IGNORE=		not supported on older CURRENT, no kernel support
+.endif
+
+do-install:
+	${INSTALL_PROGRAM} ${WRKSRC}/tcprtt ${STAGEDIR}${PREFIX}/bin
+	${INSTALL_MAN} ${WRKSRC}/tcprtt.8 ${STAGEDIR}${PREFIX}/man/man8
+
+.include <bsd.port.mk>
Index: head/net/tcprtt/distinfo
===================================================================
--- head/net/tcprtt/distinfo
+++ head/net/tcprtt/distinfo
@@ -0,0 +1,3 @@
+TIMESTAMP = 1571703393
+SHA256 (KlaraSystems-tcprtt-g20191022-1c857b8bd6e071290d118c96c051fbdf7db40129_GH0.tar.gz) = 40c42bcaa1869ad59f72d6559ec31e0a242ecd2534a0bcbb7b3bf944bca3aae2
+SIZE (KlaraSystems-tcprtt-g20191022-1c857b8bd6e071290d118c96c051fbdf7db40129_GH0.tar.gz) = 3476
Index: head/net/tcprtt/pkg-descr
===================================================================
--- head/net/tcprtt/pkg-descr
+++ head/net/tcprtt/pkg-descr
@@ -0,0 +1,2 @@
+The tcprtt utility reliably measures the TCP handshake round trip time
+using the stats(9) statistics framework.