#!/usr/bin/perl # # Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005 Yokogawa Electric Corporation, # IPA (Information-technology Promotion Agency, Japan). # All rights reserved. # # Redistribution and use of this software in source and binary forms, with # or without modification, are permitted provided that the following # conditions and disclaimer are agreed and accepted by the user: # # 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. # # 3. Neither the names of the copyrighters, the name of the project which # is related to this software (hereinafter referred to as "project") nor # the names of the contributors may be used to endorse or promote products # derived from this software without specific prior written permission. # # 4. No merchantable use may be permitted without prior written # notification to the copyrighters. However, using this software for the # purpose of testing or evaluating any products including merchantable # products may be permitted without any notification to the copyrighters. # # # # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHTERS, THE PROJECT AND # CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING # BUT NOT LIMITED THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS # FOR A PARTICULAR PURPOSE, ARE DISCLAIMED. IN NO EVENT SHALL THE # COPYRIGHTERS, THE PROJECT 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. # # $TAHI: ct/natpt/ping_siit.seq,v 1.4 2001/10/11 01:41:46 akisada Exp $ # BEGIN { $V6evalTool::TestVersion = '$Name: REL_2_1_2 $'; } use V6evalTool; use natpt; checkNUT(router); # Interface $IF="Link0"; $IF1="Link1"; vCapture($IF); vCapture($IF1); %pktdesc = ( echo_request_nut2tn_siit => 'Send V6 Echo Request on Link0', echo_request_LINK0_LINK1_v4_tn2tn => 'Recv V4 Echo Request on Link1', echo_reply_LINK0_LINK1_v4_tn2tn => 'Send V4 Echo Reply on Link1', echo_reply_LINK0_tn2tn_siit => 'Recv V6 Echo Reply on Link0', arp_nut2tn_request => 'Recv ARP request on Link1 (TN IPv4addr)', arp_tn2nut_reply => 'Send ARP reply on Link1 (TN IPv4addr)', ns_nut2tn_siit0 => 'Recv Neighbor Solicitation on Link0 (SIIT V6addr)', na_tn2nut_siit0 => 'Send Neighbor Advertisement on Link0 (SIIT V6addr)', ); $result = $V6evalTool::exitPass; $result += send_recv($IF, 'echo_request_tn2nut_siit', $IF1, 'echo_request_v4_nut2tn_df'); $result += send_recv($IF1, 'echo_reply_v4_tn2nut_df', $IF, 'echo_reply_nut2tn_siit'); if($result == $V6evalTool::exitPass) { vLogHTML("

OK

"); exit $V6evalTool::exitPass; } error: vLogHTML("

NG

"); exit $V6evalTool::exitFail; ######################################################################## __END__ =head1 NAME ping_siit.seq - Verify IPv6 <-> IPv4 header translation in accordance with RFC2765 [SIIT] =head1 TARGET Router =head1 SYNOPSIS ping_siit.seq [-tooloption ...] -p ping_siit.def =head1 INITIALIZATION =begin html 
	Before this test starts, run initialize.seq.
=end html =head1 TEST PROCEDURE This test verifies that NUT translates between IPv6 (no fragment hdr) and IPv4 (DF=1). It also tests ICMPv6 echo <-> ICMPv4 echo translation. Network Topology Link0 -------------------------- | | TN NUT | | -------------------------- Link1 TN -- (Link0) -- NUT NUT -- (Link1) -- TN --------------------- ------------------------ =begin html
1.1.1 ===================> ICMPv6 Echo Request IPv6 Header src address : TN LINK0 IPv4 embedded IPv6 address dst address : TN LINK1 IPv4 embedded IPv6 address ICMPv6 echo request 1.1.2 <> ===================> ICMPv4 Echo request IPv4 Header src address : TN LINK0 IPv4 address dst address : TN LINK1 IPv4 address Don't Fragment = 1 More fragments = 0 ICMPv4 echo request =begin html
1.2.1 <=================== ICMPv4 Echo Reply IPv4 Header src address : TN LINK1 IPv4 address dst address : TN LINK0 IPv4 address Don't Fragment = 1 More fragments = 0 ICMPv4 echo reply 1.2.2 <> <=================== ICMPv6 Echo Reply IPv6 Header src address : TN LINK1 IPv4 embedded IPv6 address dst address : TN LINK0 IPv4 embedded IPv6 address FlowLabel = 0 ICMPv6 echo reply =head1 JUDGMENT << PASS >> TN (Link1) received ICMPv4 echo request, with DF=1 in IPv4 header. TN (Link0) received ICMPv6 echo reply, with no fragment header after IPv6 header. << FAIL >> NUT did not translate between ICMPv6 echo and ICMPv4 echo, or NUT did not translate between IPv6 fragment header and IPv4 DF option. =head1 NOTE =head1 REFERENCE B 3.1. Translating IPv4 Headers into IPv6 Headers If the DF bit is set and the packet is not a fragment (i.e., the MF flag is not set and the Fragment Offset is zero) then there is no need to add a fragment header to the packet. Flow Label: 0 (all zero bits) 3.3. Translating ICMPv4 Headers into ICMPv6 Headers Echo and Echo Reply (Type 8 and Type 0) Adjust the type to 128 and 129, respectively, and adjust the ICMP checksum both to take the type change into account and to include the ICMPv6 pseudo-header. 4.1. Translating IPv6 Headers into IPv4 Headers If there is no IPv6 Fragment header the IPv4 header fields are set as follows: Flags: The More Fragments flag is set to zero. The Don't Fragments flag is set to one. 4.2. Translating ICMPv6 Headers into ICMPv4 Headers Echo Request and Echo Reply (Type 128 and 129) Adjust the type to 0 and 8, respectively, and adjust the ICMP checksum both to take the type change into account and to exclude the ICMPv6 pseudo-header. =head1 SEE ALSO perldoc V6evalTool =cut