diff --git a/src/etc/sysctl.conf b/src/etc/sysctl.conf
index 96f25206..011c3723 100644
--- a/src/etc/sysctl.conf
+++ b/src/etc/sysctl.conf
@@ -1,4 +1,4 @@
-#	$OpenBSD: sysctl.conf,v 1.30 2003/08/24 06:21:56 tedu Exp $
+#	$OpenBSD: sysctl.conf,v 1.31 2004/02/25 21:30:38 fgsch Exp $
 #
 # This file contains a list of sysctl options the user wants set at
 # boot time.  See sysctl(3) and sysctl(8) for more information on
@@ -8,6 +8,7 @@
 #net.inet6.ip6.forwarding=1	# 1=Permit forwarding (routing) of packets
 #net.inet6.ip6.accept_rtadv=1	# 1=Permit IPv6 autoconf (forwarding must be 0)
 #net.inet.tcp.rfc1323=0		# 0=disable TCP RFC1323 extensions (for if tcp is slow)
+#net.inet.tcp.rfc3390=1		# 1=Enable RFC3390 for TCP window increasing
 #net.inet.esp.enable=0		# 0=Disable the ESP IPsec protocol
 #net.inet.ah.enable=0		# 0=Disable the AH IPsec protocol
 #net.inet.ipcomp.enable=1	# 1=Enable the IPCOMP protocol