3 # SPDX-License-Identifier: BSD-2-Clause
5 # Copyright (c) 2019 Netflix, Inc.
7 # Redistribution and use in source and binary forms, with or without
8 # modification, are permitted provided that the following conditions
10 # 1. Redistributions of source code must retain the above copyright
11 # notice, this list of conditions and the following disclaimer.
12 # 2. Redistributions in binary form must reproduce the above copyright
13 # notice, this list of conditions and the following disclaimer in the
14 # documentation and/or other materials provided with the distribution.
16 # THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 # ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 # OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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25 # OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 import scapy.all as sp
37 parser = argparse.ArgumentParser("scapyi386.py",
38 description="IPv6 Ethernet Dest MAC test")
39 parser.add_argument('--sendif', nargs=1,
41 help='The interface through which the packet will be sent')
42 parser.add_argument('--recvif', nargs=1,
44 help='The interface on which to check for the packet')
45 parser.add_argument('--src', nargs=1,
47 help='The source IP address')
48 parser.add_argument('--to', nargs=1,
50 help='The destination IP address')
51 parser.add_argument('--debug',
52 required=False, action='store_true',
53 help='Enable test debugging')
55 args = parser.parse_args()
57 ########################################################################
59 # A test case to check that IPv6 packets are sent with a proper
60 # (resolved) Ethernet Destination MAC address instead of the BCAST one.
61 # This was needed as test cases did not work properly on i386 due to a
62 # scapy BPF parsing bug. (See PR 239380 and duplicates).
64 bcmac = sp.Ether(dst="ff:ff:ff:ff:ff:ff").dst
67 sp.IPv6(src=args.src[0], dst=args.to[0]) / \
68 sp.UDP(dport=3456, sport=6543) / \
70 sp.sendp(pkt, iface=args.sendif[0], verbose=False)
72 eth = pkt.getlayer(sp.Ether)
74 print("No Ether in packet")
78 print("Broadcast dMAC on packet")
84 if __name__ == '__main__':