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cb2657c962
This serves as a regression test for commit a48df53e4249. Reviewed by: bz, allanjude MFC after: 2 weeks Sponsored by: Klara, Inc. Sponsored by: Bell Tower Integration Differential Revision: https://reviews.freebsd.org/D46136 (cherry picked from commit feda329622bc77ab64ae5f0bf852743f4a037616)
38 lines
1.2 KiB
Python
38 lines
1.2 KiB
Python
#-
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# SPDX-License-Identifier: BSD-2-Clause
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#
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# Copyright (c) 2024 Klara, Inc.
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#
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import argparse
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import scapy.all as sp
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import sys
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#
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# Emit a router advertisement with the specified prefix.
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#
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def main():
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parser = argparse.ArgumentParser("ra.py",
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description="Emits Router Advertisement packets")
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parser.add_argument('--sendif', nargs=1, required=True,
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help='The interface through which the packet will be sent')
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parser.add_argument('--src', nargs=1, required=True,
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help='The source IP address')
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parser.add_argument('--dst', nargs=1, required=True,
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help='The destination IP address')
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parser.add_argument('--prefix', nargs=1, required=True,
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help='The prefix to be advertised')
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parser.add_argument('--prefixlen', nargs=1, required=True, type=int,
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help='The prefix length to be advertised')
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args = parser.parse_args()
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pkt = sp.Ether() / \
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sp.IPv6(src=args.src, dst=args.dst) / \
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sp.ICMPv6ND_RA(chlim=64) / \
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sp.ICMPv6NDOptPrefixInfo(prefix=args.prefix, prefixlen=args.prefixlen)
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sp.sendp(pkt, iface=args.sendif[0], verbose=False)
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sys.exit(0)
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if __name__ == '__main__':
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main()
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