set streamblock_ret1 [::sth::traffic_config \ -mode create\ -port_handle $hport1 \ -l2_encap ethernet_ii\ -l3_protocol ipv6\ -mac_src_count 2000\ -mac_src_mode increment\ -ipv6_srcprefix_len 12\ -ipv6_srcprefix ::FFFF:FFFF\ -ipv6_src_step ::1\ -ipv6_src_mode increment\ -ipv6_src_count 2000\ -ipv6_src_addr 2000::2\ -ipv6_traffic_class 0\ -ipv6_dst_addr 3001::2\ -ipv6_next_header 59\ -ipv6_length 0\ -ipv6_flow_label 0\ -ipv6_hop_limit 255\ -mac_src 00:10:94:00:00:02\ -ether_type 88B5\ -mac_dst 00:27:0D:D3:DE:12\ -enable_control_plane 0\ -l3_length 110\ -name IPv6_2k\ -fill_type constant\ -fcs_error 0\ -fill_value 0\ -traffic_state 1\ -high_speed_result_analysis 1\ -length_mode fixed\ -disable_signature 0\ -enable_stream_only_gen 1\ -pkts_per_burst 1\ -inter_stream_gap_unit bytes\ -transmit_mode continuous\ -inter_stream_gap 12\ -rate_pps 300\ -mac_discovery_gw 2002::1 \ -enable_stream false]