Method firstlayer

scapy/packet.py:1377–1382

(self)

                                     _subclass=_subclass, **flt)

    def firstlayer(self):
        # type: () -> Packet
        q = self
        while q.underlayer is not None:
            q = q.underlayer
        return q

    def __getitem__(self, cls):
        # type: (Union[Type[Packet], str]) -> Any