Snap for 6378851 from 59c69981 to rvc-release

    NS_R_NOTAUTH = 9;   // Not authoritative for zone

    NS_R_NOTZONE = 10;  // Zone of record different from zone section

    NS_R_MAX = 11;

    // Define rcode=12~15(UNASSIGNED) in rcode enum type.

    // Some DNS Servers might return undefined code to devices.

    // Without the enum definition, that would be noise for our dashboard.

    NS_R_UNASSIGNED12 = 12; // Unassigned

    NS_R_UNASSIGNED13 = 13; // Unassigned

    NS_R_UNASSIGNED14 = 14; // Unassigned

    NS_R_UNASSIGNED15 = 15; // Unassigned

    // The following are EDNS extended rcodes

    NS_R_BADVERS = 16;

    // The following are TSIG errors

    NT_BLUETOOTH = 3;

    // Indicates this network uses an Ethernet transport.

    NT_ETHERNET = 4;

    // Indicates this network uses a VPN transport.

    NT_VPN = 5;

    // Indicates this network uses a VPN transport, now deprecated.

    NT_VPN = 5 [deprecated=true];

    // Indicates this network uses a Wi-Fi Aware transport.

    NT_WIFI_AWARE = 6;

    // Indicates this network uses a LoWPAN transport.

    NT_LOWPAN = 7;

    // Indicates this network uses a Cellular+VPN transport.

    NT_CELLULAR_VPN = 8;

    // Indicates this network uses a Wi-Fi+VPN transport.

    NT_WIFI_VPN = 9;

    // Indicates this network uses a Bluetooth+VPN transport.

    NT_BLUETOOTH_VPN = 10;

    // Indicates this network uses an Ethernet+VPN transport.

    NT_ETHERNET_VPN = 11;

    // Indicates this network uses a Wi-Fi+Cellular+VPN transport.

    NT_WIFI_CELLULAR_VPN = 12;

}

enum CacheStatus{