def METHOD_NAME(self, pv):
    pkts = pv.pkts
    pv.summary.show()
    ROUTER_3 = pv.vars['ROUTER_3']
    ED = pv.vars['ED']
    _router3_pkts = pkts.filter_wpan_src64(ROUTER_3)
    _ed_pkts = pkts.filter_wpan_src64(ED)
    # Step 2: The DUT MUST send a MLE Parent Request to the
    # All-Routers multicast address
    _ed_pkts.filter_mle_cmd(MLE_PARENT_REQUEST).filter_ipv6_dst(
        LINK_LOCAL_ALL_ROUTERS_MULTICAST_ADDRESS).must_next().must_verify(
            lambda p: {MODE_TLV, CHALLENGE_TLV, SCAN_MASK_TLV, VERSION_TLV} == set(p.mle.tlv.type
                                                                                  ) and p.mle.tlv.scan_mask.r == 1)
    # Step 3: Router_2, Router_3 Respond with MLE Parent Response
    # Step 4: DUT Send a Child ID Request to Router_3 due to better connectivity
    _ed_pkts.filter_mle_cmd(MLE_CHILD_ID_REQUEST).must_next().must_verify(
        lambda p: {
            RESPONSE_TLV, LINK_LAYER_FRAME_COUNTER_TLV, MLE_FRAME_COUNTER_TLV, MODE_TLV, TIMEOUT_TLV, VERSION_TLV,
            ADDRESS_REGISTRATION_TLV, TLV_REQUEST_TLV
        } <= set(p.mle.tlv.type))
    # Step 5: The DUT MUST respond with ICMPv6 Echo Reply
    ed_mleid = pv.vars['ED_MLEID']
    router3_mleid = pv.vars['ROUTER_3_MLEID']
    _pkt = _router3_pkts.filter(
        lambda p: p.ipv6.src == router3_mleid and p.ipv6.dst == ed_mleid).filter_ping_request().must_next()
    _ed_pkts.filter(lambda p: p.ipv6.src == ed_mleid and p.ipv6.dst == router3_mleid).filter_ping_reply(
        identifier=_pkt.icmpv6.echo.identifier).must_next()