网络工程 - 交换机后面的 ARP 源地址 - 吾爱随笔录

我有一个 ECU 向另一个 ECU 目的地发送 ARP 请求，它工作正常。当我在两者之间使用汽车开关时会出现问题。源 IP 地址为 192.168.0.12

交换机将 ARP 帧从源转发到目标，但将源 IP 地址设置为 0.0.0.0 而不是正确的源地址

在响应中，目标地址是 0.0.0.0，而不是发起 ARP 请求的真实地址或 ECU。

我的问题是：

当交换机路由 ARP 帧时，交换机在源字段中设置的地址是什么？

Frame 1: 60 bytes on wire (480 bits), 60 bytes captured (480 bits)
Ethernet II, Src: 02:00:00:00:00:02 (02:00:00:00:00:02), Dst: Broadcast (ff:ff:ff:ff:ff:ff)
    Destination: Broadcast (ff:ff:ff:ff:ff:ff)
    Source: 02:00:00:00:00:02 (02:00:00:00:00:02)
    Type: ARP (0x0806)
    Padding: 000000000000000000000000000000000000
Address Resolution Protocol (request)
    Hardware type: Ethernet (1)
    Protocol type: IPv4 (0x0800)
    Hardware size: 6
    Protocol size: 4
    Opcode: request (1)
    Sender MAC address: 02:00:00:00:00:02 (02:00:00:00:00:02)
    Sender IP address: 0.0.0.0
    Target MAC address: Broadcast (ff:ff:ff:ff:ff:ff)
    Target IP address: 192.168.0.10


    Frame 2: 60 bytes on wire (480 bits), 60 bytes captured (480 bits)
    Ethernet II, Src: 02:84:cf:3b:be:01 (02:84:cf:3b:be:01), Dst: 02:00:00:00:00:02 (02:00:00:00:00:02)
        Destination: 02:00:00:00:00:02 (02:00:00:00:00:02)
        Source: 02:84:cf:3b:be:01 (02:84:cf:3b:be:01)
        Type: ARP (0x0806)
        Padding: 000000000000000000000000000000000000
    Address Resolution Protocol (reply)
        Hardware type: Ethernet (1)
        Protocol type: IPv4 (0x0800)
        Hardware size: 6
        Protocol size: 4
        Opcode: reply (2)
        Sender MAC address: 02:84:cf:3b:be:01 (02:84:cf:3b:be:01)
        Sender IP address: 192.168.0.10
        Target MAC address: 02:00:00:00:00:02 (02:00:00:00:00:02)
        Target IP address: 0.0.0.0