参考老帖，仍然不能获取本地IP

这是以前帖中的一段代码
while(Oid == OID_GEN_NETWORK_LAYER_ADDRESSES)
{
// DbgPrint(\"=>OID_GEN_NETWORK_LAYER_ADDRESSES\\n\");
pAddrList = (PNETWORK_ADDRESS_LIST)NdisRequest->DATA.SET_INFORMATION.InformationBuffer;

if (pAddrList->AddressCount <= 0)
break;

pAddr = (PNETWORK_ADDRESS)&pAddrList->Address[0];

if (pAddr->AddressType != NDIS_PROTOCOL_ID_TCP_IP)
break;

pIpAddr = (NETWORK_ADDRESS_IP UNALIGNED *)&pAddr->Address[0];
ipsec_local_ipaddr = pIpAddr->in_addr;
// DbgPrint(\"OID_GEN_NETWORK_LAYER_ADDRESSES = %.8X\\n\",ipsec_local_ipaddr);
break;
};

每次获取的pAddrList->AddressCount = 0， pAddr->AddressType = NDIS_PROTOCOL_ID_DEFAULT （不清楚这个类型是什么意思？）
而且我看WDK里面讲NETWORK_ADDRESS_LIST：
AddressType，This member is only valid if the AddressCount member is set to zero.
NETWORK_ADDRESS：
This member is only valid if the AddressCount member in the NETWORK_ADDRESS_LIST structure is set to a nonzero value.
不明白上面代码为什么要
pAddr = (PNETWORK_ADDRESS)&pAddrList->Address[0]

if (pAddr->AddressType != NDIS_PROTOCOL_ID_TCP_IP)
break;
我尝试过直接用pAddrList->AddressType，但是结果仍然是NDIS_PROTOCOL_ID_DEFAULT ，就是不能获取IP，这个请求是我自己发的
求教高手解答

补充，This OID notifies underlying miniport and other layered drivers about the l
ist of network-layer addresses that are associated with bound instances. A b
ound instance is the binding between the calling transport and a driver set
up by a call to NdisOpenAdapter. Transports use TRANSPORT_ADDRESS and TA_ADD
RESS structures to notify underlying miniport and other layered drivers abou
t the list of network-layer addresses.


除此之外，还有没有查IP的方法
，求教························