diff --git a/vendor/github.com/opencord/voltha-protos/v4/go/voltha/core.pb.go b/vendor/github.com/opencord/voltha-protos/v4/go/voltha/core.pb.go
new file mode 100644
index 0000000..4c92095
--- /dev/null
+++ b/vendor/github.com/opencord/voltha-protos/v4/go/voltha/core.pb.go
@@ -0,0 +1,133 @@
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// source: voltha_protos/core.proto
+
+package voltha
+
+import (
+	fmt "fmt"
+	proto "github.com/golang/protobuf/proto"
+	math "math"
+)
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ = proto.Marshal
+var _ = fmt.Errorf
+var _ = math.Inf
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the proto package it is being compiled against.
+// A compilation error at this line likely means your copy of the
+// proto package needs to be updated.
+const _ = proto.ProtoPackageIsVersion3 // please upgrade the proto package
+
+// Transient State for devices
+type DeviceTransientState_Types int32
+
+const (
+	// The transient state of the device is not set
+	DeviceTransientState_NONE DeviceTransientState_Types = 0
+	// The state of the device in core is any state, i.e DELETING, DELETED, DELETE_FAILED, NONE.
+	// This state is only used for transitions.
+	DeviceTransientState_ANY DeviceTransientState_Types = 1
+	// The device is in FORCE_DELETING state
+	DeviceTransientState_FORCE_DELETING DeviceTransientState_Types = 2
+	// The device is getting deleted from adapter state
+	DeviceTransientState_DELETING_FROM_ADAPTER DeviceTransientState_Types = 3
+	// The device is deleted from adapter and is getting deleted in core.
+	DeviceTransientState_DELETING_POST_ADAPTER_RESPONSE DeviceTransientState_Types = 4
+	// State to represent that the device deletion is failed
+	DeviceTransientState_DELETE_FAILED DeviceTransientState_Types = 5
+)
+
+var DeviceTransientState_Types_name = map[int32]string{
+	0: "NONE",
+	1: "ANY",
+	2: "FORCE_DELETING",
+	3: "DELETING_FROM_ADAPTER",
+	4: "DELETING_POST_ADAPTER_RESPONSE",
+	5: "DELETE_FAILED",
+}
+
+var DeviceTransientState_Types_value = map[string]int32{
+	"NONE":                           0,
+	"ANY":                            1,
+	"FORCE_DELETING":                 2,
+	"DELETING_FROM_ADAPTER":          3,
+	"DELETING_POST_ADAPTER_RESPONSE": 4,
+	"DELETE_FAILED":                  5,
+}
+
+func (x DeviceTransientState_Types) String() string {
+	return proto.EnumName(DeviceTransientState_Types_name, int32(x))
+}
+
+func (DeviceTransientState_Types) EnumDescriptor() ([]byte, []int) {
+	return fileDescriptor_39634f15fb8a505e, []int{0, 0}
+}
+
+type DeviceTransientState struct {
+	TransientState       DeviceTransientState_Types `protobuf:"varint,1,opt,name=transient_state,json=transientState,proto3,enum=voltha.DeviceTransientState_Types" json:"transient_state,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}                   `json:"-"`
+	XXX_unrecognized     []byte                     `json:"-"`
+	XXX_sizecache        int32                      `json:"-"`
+}
+
+func (m *DeviceTransientState) Reset()         { *m = DeviceTransientState{} }
+func (m *DeviceTransientState) String() string { return proto.CompactTextString(m) }
+func (*DeviceTransientState) ProtoMessage()    {}
+func (*DeviceTransientState) Descriptor() ([]byte, []int) {
+	return fileDescriptor_39634f15fb8a505e, []int{0}
+}
+
+func (m *DeviceTransientState) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_DeviceTransientState.Unmarshal(m, b)
+}
+func (m *DeviceTransientState) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_DeviceTransientState.Marshal(b, m, deterministic)
+}
+func (m *DeviceTransientState) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_DeviceTransientState.Merge(m, src)
+}
+func (m *DeviceTransientState) XXX_Size() int {
+	return xxx_messageInfo_DeviceTransientState.Size(m)
+}
+func (m *DeviceTransientState) XXX_DiscardUnknown() {
+	xxx_messageInfo_DeviceTransientState.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_DeviceTransientState proto.InternalMessageInfo
+
+func (m *DeviceTransientState) GetTransientState() DeviceTransientState_Types {
+	if m != nil {
+		return m.TransientState
+	}
+	return DeviceTransientState_NONE
+}
+
+func init() {
+	proto.RegisterEnum("voltha.DeviceTransientState_Types", DeviceTransientState_Types_name, DeviceTransientState_Types_value)
+	proto.RegisterType((*DeviceTransientState)(nil), "voltha.DeviceTransientState")
+}
+
+func init() { proto.RegisterFile("voltha_protos/core.proto", fileDescriptor_39634f15fb8a505e) }
+
+var fileDescriptor_39634f15fb8a505e = []byte{
+	// 264 bytes of a gzipped FileDescriptorProto
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+}