def METHOD_NAME(self, pv):
    pkts = pv.pkts
    pv.summary.show()
    COMMISSIONER = pv.vars['COMMISSIONER']
    _cpkts = pkts.filter_wpan_src64(COMMISSIONER)
    _cpkts.filter_mle_cmd(MLE_CHILD_ID_RESPONSE).must_next()
    # Step 3: Verify that the following details occur in the exchange between the Joiner,
    # the Joiner_Router and the Commissioner
    # 1. UDP port (Specified by the Commissioner: in Discovery Response) is used as destination port
    # for UDP datagrams from Joiner_1 to the Commissioner.
    pkts.range(_cpkts.index).filter_mle_cmd(MLE_DISCOVERY_RESPONSE).must_next().must_verify(
        lambda p: {
            NM_EXTENDED_PAN_ID_TLV, NM_NETWORK_NAME_TLV, NM_STEERING_DATA_TLV, NM_COMMISSIONER_UDP_PORT_TLV,
            NM_JOINER_UDP_PORT_TLV, NM_DISCOVERY_RESPONSE_TLV
        } == set(p.thread_meshcop.tlv.type))
    # 2. Joiner_1 sends an initial DTLS-ClientHello handshake record to the Commissioner
    pkts.filter(lambda p: p.dtls.handshake.type == [HANDSHAKE_CLIENT_HELLO]).must_next()
    # 3. The Joiner_Router receives the initial DTLS-ClientHello handshake record and sends a RLY_RX.ntf
    # message to the Commissioner
    # Todo: verify coap payload
    jr_rloc16 = pv.vars["JOINER_ROUTER_RLOC16"]
    c_rloc16 = pv.vars["COMMISSIONER_RLOC16"]
    pkts.filter_coap_request(RLY_RX_URI).must_next().must_verify(
        lambda p: p.wpan.src16 == jr_rloc16 and p.wpan.dst16 == c_rloc16)
    # 4. The Commissioner receives the RLY_RX.ntf message and sends a RLY_TX.ntf message to the Joiner_Router
    pkts.filter_coap_request(RLY_TX_URI).must_next().must_verify(
        lambda p: p.wpan.src16 == c_rloc16 and p.wpan.dst16 == jr_rloc16)