Page MenuHomeFreeBSD
Files F45357641

rcv-invalid-ptb-ipv6.pkt
tuexen (Michael Tuexen)
Actions

Authored By
tuexen
Jul 21 2022, 7:41 PM
Size
3 KB
Referenced Files
None
Subscribers
None

rcv-invalid-ptb-ipv6.pkt
View Options

//
// Copyright (c) 2022 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.
//
--mtu=1500
--ip_version=ipv6
--tolerance_usecs=50000
// Ensure that all relevant sysctl variables have their default variables.
0.000 `sysctl -w net.inet.tcp.rfc1323=1`
+0.000 `sysctl -w net.inet.tcp.sack.enable=1`
+0.000 `sysctl -w net.inet.tcp.ecn.enable=2`
+0.000 `sysctl -w net.inet.tcp.rexmit_slop=200`
+0.000 `sysctl -w net.inet.tcp.rexmit_drop_options=0`
+0.000 `sysctl -w kern.ipc.maxsockbuf=2097152`
+0.000 `sysctl -w net.inet.tcp.recvspace=65536`
+0.000 `sysctl -w net.inet.tcp.sendspace=32768`
// Flush host cache.
+0.000 `sysctl -w net.inet.tcp.hostcache.purgenow=1`
// Create a TCP endpoint in the ESTABLISHED state.
+0.000 socket(..., SOCK_STREAM, IPPROTO_TCP) = 3
+0.000 fcntl(3, F_GETFL) = 0x02 (flags O_RDWR)
+0.000 fcntl(3, F_SETFL, O_RDWR | O_NONBLOCK) = 0
+0.000 connect(3, ..., ...) = -1 EINPROGRESS (Operation now in progress)
+0.000 > S 0:0(0) win 65535 <mss 1440,nop,wscale 6,sackOK,TS val 100 ecr 0>
+0.100 < S. 0:0(0) ack 1 win 32767 <mss 1440,sackOK,eol,eol>
+0.000 > . 1:1(0) ack 1 win 65535
+0.000 send(3, ..., 1440, 0) = 1440
+0.000 > P. 1:1441(1440) ack 1 win 65535
+0.100 < icmp packet_too_big mtu 1400 [1462:1462(0)]
// Since the ICMP message is ignored, we have a timer based retransmission
// after 3 RTT + rexmit_slop, which results in 500 ms.
+0.400 > P. 1:1441(1440) ack 1 win 65535
// Tear it down.
+0.000 close(3) = 0
+0.000 > F. 1441:1441(0) ack 1 win 65535
+0.100 < F. 1:1(0) ack 1442 win 32767
+0.000 > . 1442:1442(0) ack 2 win 65535
// Checked cached entry
+0.000 socket(..., SOCK_STREAM, IPPROTO_TCP) = 3
+0.000 fcntl(3, F_GETFL) = 0x02 (flags O_RDWR)
+0.000 fcntl(3, F_SETFL, O_RDWR | O_NONBLOCK) = 0
+0.000 connect(3, ..., ...) = -1 EINPROGRESS (Operation now in progress)
+0.000 > S 0:0(0) win 65535 <mss 1460,nop,wscale 6,sackOK,TS val 100 ecr 0>
+0.000 close(3) = 0

File Metadata

Mime Type
text/plain
Storage Engine
blob
Storage Format
Raw Data
Storage Handle
4964274
Default Alt Text
rcv-invalid-ptb-ipv6.pkt (3 KB)

Event Timeline