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	Index: head/share/man/man7/tuning.7
	===================================================================
	--- head/share/man/man7/tuning.7
	+++ head/share/man/man7/tuning.7
	@@ -24,7 +24,7 @@
	.\"
	.\" $FreeBSD$
	.\"
	-.Dd October 30, 2017
	+.Dd April 16, 2020
	.Dt TUNING 7
	.Os
	.Sh NAME
	@@ -435,7 +435,7 @@
	The
	.Fx
	delayed ACK implementation also follows the TCP protocol rule that
	-at least every other packet be acknowledged even if the standard 100ms
	+at least every other packet be acknowledged even if the standard 40ms
	timeout has not yet passed.
	Normally the worst a delayed ACK can do is
	slightly delay the teardown of a connection, or slightly delay the ramp-up
	Index: head/sys/netinet/tcp_timer.h
	===================================================================
	--- head/sys/netinet/tcp_timer.h
	+++ head/sys/netinet/tcp_timer.h
	@@ -119,7 +119,7 @@

	#define TCP_MAXRXTSHIFT 12 /* maximum retransmits */

	-#define TCPTV_DELACK ( hz/10 ) /* 100ms timeout */
	+#define TCPTV_DELACK ( hz/25 ) /* 40ms timeout */

	/*
	* If we exceed this number of retransmits for a single segment, we'll consider