//
// Copyright (c) 2018 Michael Tuexen
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// 1. Redistributions of source code must retain the above copyright
//    notice, this list of conditions and the following disclaimer.
// 2. Redistributions in binary form must reproduce the above copyright
//    notice, this list of conditions and the following disclaimer in the
//    documentation and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
// OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
// HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
// OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
// SUCH DAMAGE.
//

--ip_version=ipv4_mapped_ipv6

 0.00 `sysctl -w net.inet.tcp.hostcache.purgenow=1`
+0.00 `sysctl -w net.inet.tcp.syncookies_only=0`
+0.00 `sysctl -w net.inet.tcp.syncookies=1`
+0.00 `sysctl -w net.inet.tcp.rfc1323=1`
+0.00 `sysctl -w net.inet.tcp.sack.enable=1`
+0.00 `sysctl -w net.inet.tcp.ecn.enable=2`

+0.00 socket(..., SOCK_STREAM, IPPROTO_TCP) = 3
+0.00 setsockopt(3, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0
+0.00 bind(3, ..., ...) = 0
+0.00 listen(3, 1) = 0
+0.10 < S     0:0(0)                win 65535 <mss 1460,sackOK,eol,eol>
+0.00 > S.    0:0(0)       ack   1  win 65535 <mss 1460,sackOK,eol,eol>
+0.10 < .     1:1(0)       ack   1  win 65535
+0.00 accept(3, ..., ...) = 4
+0.00 setsockopt(4, IPPROTO_IPV6, IPV6_USE_MIN_MTU, [1], 4) = 0
+0.00 close(3) = 0
+0.00 getsockopt(4, SOL_SOCKET, SO_DOMAIN, [AF_INET6], [4]) = 0
+0.00 getsockopt(4, SOL_SOCKET, SO_ERROR, [0], [4]) = 0
+0.00 getsockopt(4, IPPROTO_IPV6, IPV6_USE_MIN_MTU, [1], [4]) = 0
+0.00 getsockopt(4, IPPROTO_TCP, TCP_MAXSEG, [1460], [4]) = 0
+0.10 send(4, ..., 1500, 0) = 1500
+0.00 >  .    1:1461(1460) ack    1 win 65535
+0.00 > P. 1461:1501(40)   ack    1 win 65535
+0.05 <  .    1:1(0)       ack 1501 win 65535
+0.10 < F.    1:1(0)       ack 1501 win 65535
+0.00 >  . 1501:1501(0)    ack    2 win 65535
+0.00 close(4) = 0
+0.00 > F. 1501:1501(0)    ack    2 win 65535
+0.05 <  .    2:2(0)       ack 1502 win 65535