我在看NIC的统计数据，找不到有关这些数字的任何信息：[0]，[1] .. [7] 像这儿：
[root@machine-1 ~]# ethtool -S enp21s0f0 NIC statistics: [0]: rx_bytes: 23048043995115 [0]: rx_ucast_packets: 15462207866 [0]: rx_mcast_packets: 0 [0]: rx_bcast_packets: 497867 [0]: rx_discards: 182348870 [0]: rx_phy_ip_err_discards: 0 [0]: rx_skb_alloc_discard: 0 [0]: rx_csum_offload_errors: 0 [0]: tx_exhaustion_events: 0 [0]: tx_bytes: 252752492903 [0]: tx_ucast_packets: 3121234510 [0]: tx_mcast_packets: 1193 [0]: tx_bcast_packets: 7 [0]: tpa_aggregations: 3083926520 [0]: tpa_aggregated_frames: 14764082568 [0]: tpa_bytes: 22280531307898 [0]: driver_filtered_tx_pkt: 0 [1]: rx_bytes: 22967624549688 [1]: rx_ucast_packets: 15411735203 [1]: rx_mcast_packets: 3941 [1]: rx_bcast_packets: 0 [1]: rx_discards: 179569626 [1]: rx_phy_ip_err_discards: 0 [1]: rx_skb_alloc_discard: 0 [1]: rx_csum_offload_errors: 0 [1]: tx_exhaustion_events: 0 [1]: tx_bytes: 251125804240 [1]: tx_ucast_packets: 3098417333 [1]: tx_mcast_packets: 2 [1]: tx_bcast_packets: 0 [1]: tpa_aggregations: 3074727449 [1]: tpa_aggregated_frames: 14713070673 [1]: tpa_bytes: 22203188664170 [1]: driver_filtered_tx_pkt: 0 ... 但是我发现，对于ARP消息，只有[0]值增加了。 那么他们是什么意思？