ZeroMem
ZeroMem (&Str, sizeof (Str));
ZeroMem (&Str, sizeof (Str));
ZeroMem (&IPv4->GatewayIpAddress, sizeof (IPv4->GatewayIpAddress));
ZeroMem (&IPv4->SubnetMask, sizeof (IPv4->SubnetMask));
ZeroMem (&IPv6->GatewayIpAddress, sizeof (IPv6->GatewayIpAddress));
ZeroMem (Hd->Signature, 16);