class ISIS_Ipv6Prefix(Packet):
name = "ISIS IPv6 Prefix"
fields_desc = [
IntField("metric", 1),
BitField("updown", 0, 1),
BitField("external", 0, 1),
BitField("subtlvindicator", 0, 1),
BitField("reserved", 0, 5),
FieldLenField("pfxlen", None, length_of="pfx", fmt="B"),
IP6PrefixField("pfx",
None,
wordbytes=1,
length_from=lambda x: x.pfxlen), # noqa: E501
ConditionalField(
FieldLenField("subtlvslen", None, length_of="subtlvs", fmt="B"),
lambda pkt: pkt.subtlvindicator == 1), # noqa: E501
ConditionalField(
PacketListField("subtlvs", [],
_ISIS_GuessSubTlvClass_2,
length_from=lambda x: x.subtlvslen),
lambda pkt: pkt.subtlvindicator == 1) # noqa: E501
]
def extract_padding(self, s):
return "", s
class OSPFv3_AS_External_LSA(OSPF_BaseLSA):
name = "OSPFv3 AS External LSA"
fields_desc = [
ShortField("age", 1),
ShortEnumField("type", 0x4005, _OSPFv3_LStypes),
IPField("id", "0.0.0.0"),
IPField("adrouter", "1.1.1.1"),
XIntField("seq", 0x80000001),
XShortField("chksum", None),
ShortField("len", None),
FlagsField("flags", 0, 8, ["T", "F", "E"]),
X3BytesField("metric", 20),
FieldLenField("prefixlen", None, length_of="prefix",
fmt="B"), # noqa: E501
OSPFv3PrefixOptionsField(),
ShortEnumField("reflstype", 0, _OSPFv3_LStypes),
IP6PrefixField("prefix",
"2001:db8:0:42::/64",
wordbytes=4,
length_from=lambda pkt: pkt.prefixlen), # noqa: E501
ConditionalField(IP6Field("fwaddr", "::"),
lambda pkt: pkt.flags & 0x02 == 0x02), # noqa: E501
ConditionalField(IntField("tag", 0),
lambda pkt: pkt.flags & 0x01 == 0x01), # noqa: E501
ConditionalField(IPField("reflsid", 0), lambda pkt: pkt.reflstype != 0)
] # noqa: E501
class OSPFv3_Prefix_Item(Packet):
name = "OSPFv3 Link Prefix Item"
fields_desc = [FieldLenField("prefixlen", None, length_of="prefix", fmt="B"), # noqa: E501
OSPFv3PrefixOptionsField(),
ShortField("metric", 10),
IP6PrefixField("prefix", "2001:db8:0:42::/64", wordbytes=4, length_from=lambda pkt: pkt.prefixlen)] # noqa: E501
def extract_padding(self, s):
return "", s
class OSPFv3_Inter_Area_Prefix_LSA(OSPF_BaseLSA):
name = "OSPFv3 Inter Area Prefix LSA"
fields_desc = [ShortField("age", 1),
ShortEnumField("type", 0x2003, _OSPFv3_LStypes),
IPField("id", "0.0.0.0"),
IPField("adrouter", "1.1.1.1"),
XIntField("seq", 0x80000001),
XShortField("chksum", None),
ShortField("len", None),
ByteField("reserved", 0),
X3BytesField("metric", 10),
FieldLenField("prefixlen", None, length_of="prefix", fmt="B"), # noqa: E501
OSPFv3PrefixOptionsField(),
ShortField("reserved2", 0),
IP6PrefixField("prefix", "2001:db8:0:42::/64", wordbytes=4, length_from=lambda pkt: pkt.prefixlen)] # noqa: E501
