为什么我的DNS解析为0.0.0.0？

为什么这样做？如果有IPv6条目，它将永远不会返回IPv4的任何东西！？？？DNS中的822到844行



      以下为原文

    Why is this done this way?  It will never return anything for ipv4 if there is an ipv6 entry!!?
 
Lines 822 to 844 in dns.c @ _DNS_IsNameResolved
 
    if(nIPv6Entries || nIPv4Entries)
    {
        if(nIPv6Entries)
        {
            if(hostIPv6)
            {
                memcpy (hostIPv6->v, pDnsHE->pip6Address + nIPv6Entries - 1, sizeof (IPV6_ADDR));
            }
            if(singleAddress)
            { // retrieve only one address
                nIPv4Entries = 0;
            }
        }

        if(nIPv4Entries)
        {
            if(hostIPv4)
            { // get the 0th location of the address
                hostIPv4->Val = (pDnsHE->pip4Address + 0)->Val;
            }
        }
        return TCPIP_DNS_RES_OK;
    }
 
 
 

只有单地址是真的吗？这套电视机在哪里？



      以下为原文

   
Only if singleAddress is true? Where is this set?

当TCPIpIdDNSISISCORDEVALIDCALDSIDSNSISNAMESELVIEDLIN 756＝返回ONDSNSISN（主机名、HOSTIVPV4、HOTIFPV6、TRUE）时，该框架在框架中自动设置；



      以下为原文

    This is set automatically in the framework when TCPIP_DNS_IsResolved calls _DNS_IsNameResolved
 
line 756 = return _DNS_IsNameResolved(hostName, hostIPv4, hostIPv6, true);

如果我把它改为NIPV4条目＝1，它会起作用，不过我想解释一下。



      以下为原文

    It works as expected if I change it to nIPv4Entries = 1;
 
I'd like some explanation though.