/usr/lib/python2.7/dist-packages/scapy/layers/vrrp.py is in python-scapy 2.3.3-1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 | ## This file is part of Scapy
## See http://www.secdev.org/projects/scapy for more informations
## Copyright (C) Philippe Biondi <phil@secdev.org>
## Copyright (C) 6WIND <olivier.matz@6wind.com>
## This program is published under a GPLv2 license
"""
VRRP (Virtual Router Redundancy Protocol).
"""
from scapy.packet import *
from scapy.fields import *
from scapy.layers.inet import IP
IPPROTO_VRRP=112
# RFC 3768 - Virtual Router Redundancy Protocol (VRRP)
class VRRP(Packet):
fields_desc = [
BitField("version" , 2, 4),
BitField("type" , 1, 4),
ByteField("vrid", 1),
ByteField("priority", 100),
FieldLenField("ipcount", None, count_of="addrlist", fmt="B"),
ByteField("authtype", 0),
ByteField("adv", 1),
XShortField("chksum", None),
FieldListField("addrlist", [], IPField("", "0.0.0.0"),
count_from = lambda pkt: pkt.ipcount),
IntField("auth1", 0),
IntField("auth2", 0) ]
def post_build(self, p, pay):
if self.chksum is None:
ck = checksum(p)
p = p[:6]+chr(ck>>8)+chr(ck&0xff)+p[8:]
return p
bind_layers( IP, VRRP, proto=IPPROTO_VRRP)
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