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#!/usr/bin/env python
# http://trac.secdev.org/scapy/ticket/301
# scapy.contrib.description = RIPng
# scapy.contrib.status = loads
from scapy.packet import *
from scapy.fields import *
from scapy.layers.inet import UDP
from scapy.layers.inet6 import *
class RIPng(Packet):
name = "RIPng header"
fields_desc = [
ByteEnumField("cmd", 1, {1 : "req", 2 : "resp"}),
ByteField("ver", 1),
ShortField("null", 0),
]
class RIPngEntry(Packet):
name = "RIPng entry"
fields_desc = [
ConditionalField(IP6Field("prefix", "::"),
lambda pkt: pkt.metric != 255),
ConditionalField(IP6Field("nexthop", "::"),
lambda pkt: pkt.metric == 255),
ShortField("routetag", 0),
ByteField("prefixlen", 0),
ByteEnumField("metric", 1, {16 : "Unreach",
255 : "next-hop entry"})
]
bind_layers(UDP, RIPng, sport=521, dport=521)
bind_layers(RIPng, RIPngEntry)
bind_layers(RIPngEntry, RIPngEntry)
if __name__ == "__main__":
from scapy.main import interact
interact(mydict=globals(), mybanner="RIPng")
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