Class IE_IP_Address

scapy/contrib/gtp_v2.py:267–284

class IE_IP_Address(gtp.IE_Base):
    name = "IE IP Address"
    fields_desc = [ByteEnumField("ietype", 74, IEType),
                   ShortField("length", None),
                   BitField("CR_flag", 0, 4),
                   BitField("instance", 0, 4),
                   ConditionalField(
                       IPField("address", RandIP()),
                       lambda pkt: pkt.length == 4),
                   ConditionalField(
                       IP6Field("address6", None),
                       lambda pkt: pkt.length == 16)]

    def post_build(self, p, pay):
        if self.length is None:
            tmp_len = 16 if self.address6 is not None else 4
            p = p[:1] + struct.pack("!H", tmp_len) + p[2:]
        return p + pay


class IE_MEI(gtp.IE_Base):