1 files changed, 39 insertions, 0 deletions
diff --git a/scripts/external_libs/scapy-2.3.1/python2/scapy/layers/vrrp.py b/scripts/external_libs/scapy-2.3.1/python2/scapy/layers/vrrp.py
new file mode 100644
index 00000000..f874b352
--- /dev/null
+++ b/scripts/external_libs/scapy-2.3.1/python2/scapy/layers/vrrp.py
@@ -0,0 +1,39 @@
+## 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)