diff --git a/config.ini b/config.ini
index a131ed424..9ab33bb16 100644
--- a/config.ini
+++ b/config.ini
@@ -201,6 +201,7 @@ net.inet.tcp.sack.enable=1
 net.inet.tcp.blackhole=1
 net.inet.tcp.msl=2000
 net.inet.tcp.delayed_ack=1
+net.inet.tcp.rfc1323=1
 
 net.inet.udp.blackhole=1
 net.inet.ip.redirect=0