How to use the scapy.layers.l2.Ether function in scapy

ARP(op="who-has",
                 hwsrc=self.pg0.remote_mac,
                 pdst=self.pg1.local_ip4,
                 psrc=self.pg1.remote_ip4))
        self.send_and_assert_no_replies(self.pg0, p,
                                        "ARP req diff sub-net")
        self.assertFalse(find_nbr(self,
                                  self.pg0.sw_if_index,
                                  self.pg1.remote_ip4))

        #
        #  2 - don't respond to ARP request from an address not within the
        #      interface's sub-net
        #   2b - to a proxied address
        #   2c - not within a different interface's sub-net
        p = (Ether(dst="ff:ff:ff:ff:ff:ff", src=self.pg0.remote_mac) /
             ARP(op="who-has",
                 hwsrc=self.pg0.remote_mac,
                 psrc="10.10.10.3",
                 pdst=self.pg0.local_ip4))
        self.send_and_assert_no_replies(self.pg0, p,
                                        "ARP req for non-local source")
        p = (Ether(dst="ff:ff:ff:ff:ff:ff", src=self.pg2.remote_mac) /
             ARP(op="who-has",
                 hwsrc=self.pg2.remote_mac,
                 psrc="10.10.10.3",
                 pdst=self.pg0.local_ip4))
        self.send_and_assert_no_replies(
            self.pg0, p,
            "ARP req for non-local source - unnum")
        p = (Ether(dst="ff:ff:ff:ff:ff:ff", src=self.pg0.remote_mac) /
             ARP(op="who-has",

def create_tunnel_stream_4o4(self, src_if,
                                 tunnel_src, tunnel_dst,
                                 src_ip, dst_ip):
        pkts = []
        for i in range(0, 257):
            info = self.create_packet_info(src_if, src_if)
            payload = self.info_to_payload(info)
            p = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) /
                 IP(src=tunnel_src, dst=tunnel_dst) /
                 GRE() /
                 IP(src=src_ip, dst=dst_ip) /
                 UDP(sport=1234, dport=1234) /
                 Raw(payload))
            info.data = p.copy()
            pkts.append(p)
        return pkts

def compare_rx_tx_packet_End_AD_L2_out(self, tx_pkt, rx_pkt):
        """ Compare input and output packet after passing End.AD with L2

        :param tx_pkt: transmitted packet
        :param rx_pkt: received packet
        """

        # get IPv4 header of rx'ed packet
        rx_eth = rx_pkt.getlayer(Ether)

        tx_ip = tx_pkt.getlayer(IPv6)
        # we can't just get the 2nd Ether layer
        # get the Raw content and dissect it as Ether
        tx_eth1 = Ether(scapy.compat.raw(tx_pkt[Raw]))

        # verify if rx'ed packet has no SRH
        self.assertFalse(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))

        # the whole rx_eth pkt should be equal to tx_eth1
        self.assertEqual(rx_eth, tx_eth1)

        self.logger.debug("packet verification: SUCCESS")

# epg is not learnt, becasue the EPG is unknwon
        self.assertEqual(len(self.vapi.gbp_endpoint_dump()), 1)

        #
        # Learn new EPs from IP packets
        #
        for ii, l in enumerate(learnt):
            # a packet with an sclass from a knwon EPG
            # arriving on an unknown TEP
            p = (Ether(src=self.pg2.remote_mac,
                       dst=self.pg2.local_mac) /
                 IP(src=self.pg2.remote_hosts[1].ip4,
                    dst=self.pg2.local_ip4) /
                 UDP(sport=1234, dport=48879) /
                 VXLAN(vni=99, gpid=112, flags=0x88) /
                 Ether(src=l['mac'], dst=ep.mac) /
                 IP(src=l['ip'], dst=ep.ip4.address) /
                 UDP(sport=1234, dport=1234) /
                 Raw('\xa5' * 100))

            rx = self.send_and_expect(self.pg2, [p], self.pg0)

            # the new TEP
            tep1_sw_if_index = find_vxlan_gbp_tunnel(
                self,
                self.pg2.local_ip4,
                self.pg2.remote_hosts[1].ip4,
                99)
            self.assertNotEqual(INDEX_INVALID, tep1_sw_if_index)

            #
            # the EP is learnt via the learnt TEP

def create_stream_in(self, in_if, out_if, ttl=64):
        """
        Create packet stream for inside network

        :param in_if: Inside interface
        :param out_if: Outside interface
        :param ttl: TTL of generated packets
        """
        pkts = []
        # TCP
        p = (Ether(dst=in_if.local_mac, src=in_if.remote_mac) /
             IP(src=in_if.remote_ip4, dst=out_if.remote_ip4, ttl=ttl) /
             TCP(sport=self.tcp_port_in, dport=20))
        pkts.append(p)

        # UDP
        p = (Ether(dst=in_if.local_mac, src=in_if.remote_mac) /
             IP(src=in_if.remote_ip4, dst=out_if.remote_ip4, ttl=ttl) /
             UDP(sport=self.udp_port_in, dport=20))
        pkts.append(p)

        # ICMP
        p = (Ether(dst=in_if.local_mac, src=in_if.remote_mac) /
             IP(src=in_if.remote_ip4, dst=out_if.remote_ip4, ttl=ttl) /
             ICMP(id=self.icmp_id_in, type='echo-request'))
        pkts.append(p)

def create_stream_ip4(self, src_if, src_ip, dst_ip):
        pkts = []
        for i in range(0, 257):
            info = self.create_packet_info(src_if, src_if)
            payload = self.info_to_payload(info)
            p = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) /
                 IP(src=src_ip, dst=dst_ip) /
                 UDP(sport=1234, dport=1234) /
                 Raw(payload))
            info.data = p.copy()
            pkts.append(p)
        return pkts

af_ip4 = VppEnum.vl_api_address_family_t.ADDRESS_IP4
        udp_proto = VppEnum.vl_api_ip_proto_t.IP_API_PROTO_UDP
        punt_udp = {
            'type': pt_l4,
            'punt': {
                'l4': {
                    'af': af_ip4,
                    'protocol': udp_proto,
                    'port': 1234,
                }
            }
        }

        self.vapi.set_punt(is_add=1, punt=punt_udp)

        p = (Ether(src=self.pg0.remote_mac,
                   dst=self.pg0.local_mac) /
             IP(src=self.pg0.remote_ip4, dst=self.pg0.local_ip4) /
             UDP(sport=1234, dport=1234) /
             Raw(b'\xa5' * 100))

        pkts = p * 1025

        #
        # Configure a punt redirect via pg1.
        #
        nh_addr = self.pg1.remote_ip4
        self.vapi.ip_punt_redirect(self.pg0.sw_if_index,
                                   self.pg1.sw_if_index,
                                   nh_addr)

        self.send_and_expect(self.pg0, pkts, self.pg1)

ip_version = (orb(payload[0]) >> 4) & 0xF
            if ip_version == 4:
                return IP
            elif ip_version == 5:
                return BIER
            elif ip_version == 6:
                return IPv6
            else:
                if orb(payload[0]) == 0 and orb(payload[1]) == 0:
                    return EoMCW
                else:
                    return Ether
        return Padding


bind_layers(Ether, MPLS, type=0x8847)
bind_layers(IP, MPLS, proto=137)
bind_layers(IPv6, MPLS, nh=137)
bind_layers(UDP, MPLS, dport=6635)
bind_layers(GRE, MPLS, proto=0x8847)
bind_layers(MPLS, MPLS, s=0)
bind_layers(MPLS, IP, label=0)  # IPv4 Explicit NULL
bind_layers(MPLS, IPv6, label=2)  # IPv6 Explicit NULL
bind_layers(MPLS, EoMCW)
bind_layers(EoMCW, Ether, zero=0, reserved=0)

def main(self):
        if self.path_dst is None:
            self._view.error('Missing filename')
            return

        pcapwr = scapy.utils.PcapWriter(self.path_dst)

        try:
            while not self.is_stopped():
                if self._poll(0.1):
                    s = self._recv()
                    if s:
                        p = scapy.layers.l2.Ether(s)
                        pcapwr.write(p)
        except (IOError, EOFError):
            pass

        pcapwr.close()

def deal_common_pkt(self, pkt):
        # Send to DHCP server
        # LLC / SNAP to Ether
        if SNAP in pkt:
            ether_pkt = Ether(src=self.client, dst=self.mac) / pkt[SNAP].payload  # noqa: E501
            self.dhcp_server.reply(ether_pkt)

        # If an ARP request is made, extract client IP and answer
        if ARP in pkt and \
           pkt[ARP].op == 1 and pkt[ARP].pdst == self.dhcp_server.gw:
            if self.arp_target_ip is None:
                self.arp_target_ip = pkt[ARP].psrc
                log_runtime.info("Detected IP: %s", self.arp_target_ip)

            # Reply
            ARP_ans = LLC() / SNAP() / ARP(
                op="is-at",
                psrc=self.arp_source_ip,
                pdst=self.arp_target_ip,
                hwsrc=self.mac,
                hwdst=self.client,