diff --git a/proto/topo.proto b/proto/topo.proto
index c392dda7..0d7ce7b5 100644
--- a/proto/topo.proto
+++ b/proto/topo.proto
@@ -81,6 +81,32 @@ message Node {
   // If interfaces is empty the interfaces defined in the links portion of the
   // topology will be populated into the node.
   map<string, Interface> interfaces = 12;
+  // Any host constraints required by the node. These may not be required by a 
+  // vendor, but it can be used to provide requirements for the node.
+  repeated HostConstraint host_constraints = 13;
+}
+
+// HostConstraint is a constraint on the host where the node is running.
+message HostConstraint{
+  oneof constraint{
+    // Includes the required sysctl settings that need to be configured
+    KernelParam kernel_constraint = 1;
+  }
+}
+
+// Kernel parameter for Sysctl settings for the host
+message KernelParam{
+  // MIB style name of the kernel state to constrain.
+  string name = 1;
+  oneof ConstraintType{
+    BoundedInteger bounded_integer = 2;
+  }
+}
+
+// BoundedInteger to capture the range of max or min for a particular setting
+message BoundedInteger{
+  int64 max_value = 1;
+  int64 min_value = 2;
 }
 
 // Interface keys must be the same as the links a,z int.
diff --git a/proto/topo/topo.pb.go b/proto/topo/topo.pb.go
index a7426558..b1771ece 100644
--- a/proto/topo/topo.pb.go
+++ b/proto/topo/topo.pb.go
@@ -285,6 +285,9 @@ type Node struct {
 	// If interfaces is empty the interfaces defined in the links portion of the
 	// topology will be populated into the node.
 	Interfaces map[string]*Interface `protobuf:"bytes,12,rep,name=interfaces,proto3" json:"interfaces,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
+	// Any host constraints required by the node. These may not be required by a
+	// vendor, but it can be used to provide requirements for the node.
+	HostConstraints []*HostConstraint `protobuf:"bytes,13,rep,name=host_constraints,json=hostConstraints,proto3" json:"host_constraints,omitempty"`
 }
 
 func (x *Node) Reset() {
@@ -397,6 +400,215 @@ func (x *Node) GetInterfaces() map[string]*Interface {
 	return nil
 }
 
+func (x *Node) GetHostConstraints() []*HostConstraint {
+	if x != nil {
+		return x.HostConstraints
+	}
+	return nil
+}
+
+// HostConstraint is a constraint on the host where the node is running.
+type HostConstraint struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// Types that are assignable to Constraint:
+	//
+	//	*HostConstraint_KernelConstraint
+	Constraint isHostConstraint_Constraint `protobuf_oneof:"constraint"`
+}
+
+func (x *HostConstraint) Reset() {
+	*x = HostConstraint{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_topo_proto_msgTypes[2]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *HostConstraint) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*HostConstraint) ProtoMessage() {}
+
+func (x *HostConstraint) ProtoReflect() protoreflect.Message {
+	mi := &file_topo_proto_msgTypes[2]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use HostConstraint.ProtoReflect.Descriptor instead.
+func (*HostConstraint) Descriptor() ([]byte, []int) {
+	return file_topo_proto_rawDescGZIP(), []int{2}
+}
+
+func (m *HostConstraint) GetConstraint() isHostConstraint_Constraint {
+	if m != nil {
+		return m.Constraint
+	}
+	return nil
+}
+
+func (x *HostConstraint) GetKernelConstraint() *KernelParam {
+	if x, ok := x.GetConstraint().(*HostConstraint_KernelConstraint); ok {
+		return x.KernelConstraint
+	}
+	return nil
+}
+
+type isHostConstraint_Constraint interface {
+	isHostConstraint_Constraint()
+}
+
+type HostConstraint_KernelConstraint struct {
+	// Includes the required sysctl settings that need to be configured
+	KernelConstraint *KernelParam `protobuf:"bytes,1,opt,name=kernel_constraint,json=kernelConstraint,proto3,oneof"`
+}
+
+func (*HostConstraint_KernelConstraint) isHostConstraint_Constraint() {}
+
+// Kernel parameter for Sysctl settings for the host
+type KernelParam struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// MIB style name of the kernel state to constrain.
+	Name string `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"`
+	// Types that are assignable to ConstraintType:
+	//
+	//	*KernelParam_BoundedInteger
+	ConstraintType isKernelParam_ConstraintType `protobuf_oneof:"ConstraintType"`
+}
+
+func (x *KernelParam) Reset() {
+	*x = KernelParam{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_topo_proto_msgTypes[3]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *KernelParam) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*KernelParam) ProtoMessage() {}
+
+func (x *KernelParam) ProtoReflect() protoreflect.Message {
+	mi := &file_topo_proto_msgTypes[3]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use KernelParam.ProtoReflect.Descriptor instead.
+func (*KernelParam) Descriptor() ([]byte, []int) {
+	return file_topo_proto_rawDescGZIP(), []int{3}
+}
+
+func (x *KernelParam) GetName() string {
+	if x != nil {
+		return x.Name
+	}
+	return ""
+}
+
+func (m *KernelParam) GetConstraintType() isKernelParam_ConstraintType {
+	if m != nil {
+		return m.ConstraintType
+	}
+	return nil
+}
+
+func (x *KernelParam) GetBoundedInteger() *BoundedInteger {
+	if x, ok := x.GetConstraintType().(*KernelParam_BoundedInteger); ok {
+		return x.BoundedInteger
+	}
+	return nil
+}
+
+type isKernelParam_ConstraintType interface {
+	isKernelParam_ConstraintType()
+}
+
+type KernelParam_BoundedInteger struct {
+	BoundedInteger *BoundedInteger `protobuf:"bytes,2,opt,name=bounded_integer,json=boundedInteger,proto3,oneof"`
+}
+
+func (*KernelParam_BoundedInteger) isKernelParam_ConstraintType() {}
+
+// BoundedInteger to capture the range of max or min for a particular setting
+type BoundedInteger struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	MaxValue int64 `protobuf:"varint,1,opt,name=max_value,json=maxValue,proto3" json:"max_value,omitempty"`
+	MinValue int64 `protobuf:"varint,2,opt,name=min_value,json=minValue,proto3" json:"min_value,omitempty"`
+}
+
+func (x *BoundedInteger) Reset() {
+	*x = BoundedInteger{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_topo_proto_msgTypes[4]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *BoundedInteger) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*BoundedInteger) ProtoMessage() {}
+
+func (x *BoundedInteger) ProtoReflect() protoreflect.Message {
+	mi := &file_topo_proto_msgTypes[4]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use BoundedInteger.ProtoReflect.Descriptor instead.
+func (*BoundedInteger) Descriptor() ([]byte, []int) {
+	return file_topo_proto_rawDescGZIP(), []int{4}
+}
+
+func (x *BoundedInteger) GetMaxValue() int64 {
+	if x != nil {
+		return x.MaxValue
+	}
+	return 0
+}
+
+func (x *BoundedInteger) GetMinValue() int64 {
+	if x != nil {
+		return x.MinValue
+	}
+	return 0
+}
+
 // Interface keys must be the same as the links a,z int.
 type Interface struct {
 	state         protoimpl.MessageState
@@ -425,7 +637,7 @@ type Interface struct {
 func (x *Interface) Reset() {
 	*x = Interface{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_topo_proto_msgTypes[2]
+		mi := &file_topo_proto_msgTypes[5]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -438,7 +650,7 @@ func (x *Interface) String() string {
 func (*Interface) ProtoMessage() {}
 
 func (x *Interface) ProtoReflect() protoreflect.Message {
-	mi := &file_topo_proto_msgTypes[2]
+	mi := &file_topo_proto_msgTypes[5]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -451,7 +663,7 @@ func (x *Interface) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Interface.ProtoReflect.Descriptor instead.
 func (*Interface) Descriptor() ([]byte, []int) {
-	return file_topo_proto_rawDescGZIP(), []int{2}
+	return file_topo_proto_rawDescGZIP(), []int{5}
 }
 
 func (x *Interface) GetName() string {
@@ -519,7 +731,7 @@ type Link struct {
 func (x *Link) Reset() {
 	*x = Link{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_topo_proto_msgTypes[3]
+		mi := &file_topo_proto_msgTypes[6]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -532,7 +744,7 @@ func (x *Link) String() string {
 func (*Link) ProtoMessage() {}
 
 func (x *Link) ProtoReflect() protoreflect.Message {
-	mi := &file_topo_proto_msgTypes[3]
+	mi := &file_topo_proto_msgTypes[6]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -545,7 +757,7 @@ func (x *Link) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Link.ProtoReflect.Descriptor instead.
 func (*Link) Descriptor() ([]byte, []int) {
-	return file_topo_proto_rawDescGZIP(), []int{3}
+	return file_topo_proto_rawDescGZIP(), []int{6}
 }
 
 func (x *Link) GetANode() string {
@@ -610,7 +822,7 @@ type Config struct {
 func (x *Config) Reset() {
 	*x = Config{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_topo_proto_msgTypes[4]
+		mi := &file_topo_proto_msgTypes[7]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -623,7 +835,7 @@ func (x *Config) String() string {
 func (*Config) ProtoMessage() {}
 
 func (x *Config) ProtoReflect() protoreflect.Message {
-	mi := &file_topo_proto_msgTypes[4]
+	mi := &file_topo_proto_msgTypes[7]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -636,7 +848,7 @@ func (x *Config) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Config.ProtoReflect.Descriptor instead.
 func (*Config) Descriptor() ([]byte, []int) {
-	return file_topo_proto_rawDescGZIP(), []int{4}
+	return file_topo_proto_rawDescGZIP(), []int{7}
 }
 
 func (x *Config) GetCommand() []string {
@@ -769,7 +981,7 @@ type CertificateCfg struct {
 func (x *CertificateCfg) Reset() {
 	*x = CertificateCfg{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_topo_proto_msgTypes[5]
+		mi := &file_topo_proto_msgTypes[8]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -782,7 +994,7 @@ func (x *CertificateCfg) String() string {
 func (*CertificateCfg) ProtoMessage() {}
 
 func (x *CertificateCfg) ProtoReflect() protoreflect.Message {
-	mi := &file_topo_proto_msgTypes[5]
+	mi := &file_topo_proto_msgTypes[8]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -795,7 +1007,7 @@ func (x *CertificateCfg) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use CertificateCfg.ProtoReflect.Descriptor instead.
 func (*CertificateCfg) Descriptor() ([]byte, []int) {
-	return file_topo_proto_rawDescGZIP(), []int{5}
+	return file_topo_proto_rawDescGZIP(), []int{8}
 }
 
 func (m *CertificateCfg) GetConfig() isCertificateCfg_Config {
@@ -841,7 +1053,7 @@ type SelfSignedCertCfg struct {
 func (x *SelfSignedCertCfg) Reset() {
 	*x = SelfSignedCertCfg{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_topo_proto_msgTypes[6]
+		mi := &file_topo_proto_msgTypes[9]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -854,7 +1066,7 @@ func (x *SelfSignedCertCfg) String() string {
 func (*SelfSignedCertCfg) ProtoMessage() {}
 
 func (x *SelfSignedCertCfg) ProtoReflect() protoreflect.Message {
-	mi := &file_topo_proto_msgTypes[6]
+	mi := &file_topo_proto_msgTypes[9]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -867,7 +1079,7 @@ func (x *SelfSignedCertCfg) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use SelfSignedCertCfg.ProtoReflect.Descriptor instead.
 func (*SelfSignedCertCfg) Descriptor() ([]byte, []int) {
-	return file_topo_proto_rawDescGZIP(), []int{6}
+	return file_topo_proto_rawDescGZIP(), []int{9}
 }
 
 func (x *SelfSignedCertCfg) GetCertName() string {
@@ -922,7 +1134,7 @@ type Service struct {
 func (x *Service) Reset() {
 	*x = Service{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_topo_proto_msgTypes[7]
+		mi := &file_topo_proto_msgTypes[10]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -935,7 +1147,7 @@ func (x *Service) String() string {
 func (*Service) ProtoMessage() {}
 
 func (x *Service) ProtoReflect() protoreflect.Message {
-	mi := &file_topo_proto_msgTypes[7]
+	mi := &file_topo_proto_msgTypes[10]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -948,7 +1160,7 @@ func (x *Service) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Service.ProtoReflect.Descriptor instead.
 func (*Service) Descriptor() ([]byte, []int) {
-	return file_topo_proto_rawDescGZIP(), []int{7}
+	return file_topo_proto_rawDescGZIP(), []int{10}
 }
 
 func (x *Service) GetName() string {
@@ -1005,7 +1217,7 @@ var file_topo_proto_rawDesc = []byte{
 	0x6f, 0x70, 0x6f, 0x2e, 0x4e, 0x6f, 0x64, 0x65, 0x52, 0x05, 0x6e, 0x6f, 0x64, 0x65, 0x73, 0x12,
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+	0x73, 0x22, 0xe9, 0x07, 0x0a, 0x04, 0x4e, 0x6f, 0x64, 0x65, 0x12, 0x12, 0x0a, 0x04, 0x6e, 0x61,
 	0x6d, 0x65, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x04, 0x6e, 0x61, 0x6d, 0x65, 0x12, 0x27,
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@@ -1032,123 +1244,145 @@ var file_topo_proto_rawDesc = []byte{
 	0x72, 0x66, 0x61, 0x63, 0x65, 0x73, 0x18, 0x0c, 0x20, 0x03, 0x28, 0x0b, 0x32, 0x1a, 0x2e, 0x74,
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+	0x10, 0x05, 0x12, 0x07, 0x0a, 0x03, 0x46, 0x52, 0x52, 0x10, 0x06, 0x12, 0x0a, 0x0a, 0x06, 0x51,
+	0x55, 0x41, 0x47, 0x47, 0x41, 0x10, 0x07, 0x12, 0x09, 0x0a, 0x05, 0x47, 0x4f, 0x42, 0x47, 0x50,
+	0x10, 0x08, 0x12, 0x09, 0x0a, 0x05, 0x4e, 0x4f, 0x4b, 0x49, 0x41, 0x10, 0x09, 0x12, 0x0e, 0x0a,
+	0x0a, 0x4f, 0x50, 0x45, 0x4e, 0x43, 0x4f, 0x4e, 0x46, 0x49, 0x47, 0x10, 0x0a, 0x42, 0x26, 0x5a,
+	0x24, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x6f, 0x70, 0x65, 0x6e,
+	0x63, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x2f, 0x6b, 0x6e, 0x65, 0x2f, 0x70, 0x72, 0x6f, 0x74, 0x6f,
+	0x2f, 0x74, 0x6f, 0x70, 0x6f, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
@@ -1164,46 +1398,52 @@ func file_topo_proto_rawDescGZIP() []byte {
 }
 
 var file_topo_proto_enumTypes = make([]protoimpl.EnumInfo, 2)
-var file_topo_proto_msgTypes = make([]protoimpl.MessageInfo, 13)
+var file_topo_proto_msgTypes = make([]protoimpl.MessageInfo, 16)
 var file_topo_proto_goTypes = []interface{}{
 	(Vendor)(0),               // 0: topo.Vendor
 	(Node_Type)(0),            // 1: topo.Node.Type
 	(*Topology)(nil),          // 2: topo.Topology
 	(*Node)(nil),              // 3: topo.Node
-	(*Interface)(nil),         // 4: topo.Interface
-	(*Link)(nil),              // 5: topo.Link
-	(*Config)(nil),            // 6: topo.Config
-	(*CertificateCfg)(nil),    // 7: topo.CertificateCfg
-	(*SelfSignedCertCfg)(nil), // 8: topo.SelfSignedCertCfg
-	(*Service)(nil),           // 9: topo.Service
-	nil,                       // 10: topo.Node.LabelsEntry
-	nil,                       // 11: topo.Node.ServicesEntry
-	nil,                       // 12: topo.Node.ConstraintsEntry
-	nil,                       // 13: topo.Node.InterfacesEntry
-	nil,                       // 14: topo.Config.EnvEntry
-	(*anypb.Any)(nil),         // 15: google.protobuf.Any
+	(*HostConstraint)(nil),    // 4: topo.HostConstraint
+	(*KernelParam)(nil),       // 5: topo.KernelParam
+	(*BoundedInteger)(nil),    // 6: topo.BoundedInteger
+	(*Interface)(nil),         // 7: topo.Interface
+	(*Link)(nil),              // 8: topo.Link
+	(*Config)(nil),            // 9: topo.Config
+	(*CertificateCfg)(nil),    // 10: topo.CertificateCfg
+	(*SelfSignedCertCfg)(nil), // 11: topo.SelfSignedCertCfg
+	(*Service)(nil),           // 12: topo.Service
+	nil,                       // 13: topo.Node.LabelsEntry
+	nil,                       // 14: topo.Node.ServicesEntry
+	nil,                       // 15: topo.Node.ConstraintsEntry
+	nil,                       // 16: topo.Node.InterfacesEntry
+	nil,                       // 17: topo.Config.EnvEntry
+	(*anypb.Any)(nil),         // 18: google.protobuf.Any
 }
 var file_topo_proto_depIdxs = []int32{
 	3,  // 0: topo.Topology.nodes:type_name -> topo.Node
-	5,  // 1: topo.Topology.links:type_name -> topo.Link
+	8,  // 1: topo.Topology.links:type_name -> topo.Link
 	1,  // 2: topo.Node.type:type_name -> topo.Node.Type
-	10, // 3: topo.Node.labels:type_name -> topo.Node.LabelsEntry
-	6,  // 4: topo.Node.config:type_name -> topo.Config
-	11, // 5: topo.Node.services:type_name -> topo.Node.ServicesEntry
-	12, // 6: topo.Node.constraints:type_name -> topo.Node.ConstraintsEntry
+	13, // 3: topo.Node.labels:type_name -> topo.Node.LabelsEntry
+	9,  // 4: topo.Node.config:type_name -> topo.Config
+	14, // 5: topo.Node.services:type_name -> topo.Node.ServicesEntry
+	15, // 6: topo.Node.constraints:type_name -> topo.Node.ConstraintsEntry
 	0,  // 7: topo.Node.vendor:type_name -> topo.Vendor
-	13, // 8: topo.Node.interfaces:type_name -> topo.Node.InterfacesEntry
-	14, // 9: topo.Config.env:type_name -> topo.Config.EnvEntry
-	7,  // 10: topo.Config.cert:type_name -> topo.CertificateCfg
-	15, // 11: topo.Config.vendor_data:type_name -> google.protobuf.Any
-	8,  // 12: topo.CertificateCfg.self_signed:type_name -> topo.SelfSignedCertCfg
-	9,  // 13: topo.Node.ServicesEntry.value:type_name -> topo.Service
-	4,  // 14: topo.Node.InterfacesEntry.value:type_name -> topo.Interface
-	15, // [15:15] is the sub-list for method output_type
-	15, // [15:15] is the sub-list for method input_type
-	15, // [15:15] is the sub-list for extension type_name
-	15, // [15:15] is the sub-list for extension extendee
-	0,  // [0:15] is the sub-list for field type_name
+	16, // 8: topo.Node.interfaces:type_name -> topo.Node.InterfacesEntry
+	4,  // 9: topo.Node.host_constraints:type_name -> topo.HostConstraint
+	5,  // 10: topo.HostConstraint.kernel_constraint:type_name -> topo.KernelParam
+	6,  // 11: topo.KernelParam.bounded_integer:type_name -> topo.BoundedInteger
+	17, // 12: topo.Config.env:type_name -> topo.Config.EnvEntry
+	10, // 13: topo.Config.cert:type_name -> topo.CertificateCfg
+	18, // 14: topo.Config.vendor_data:type_name -> google.protobuf.Any
+	11, // 15: topo.CertificateCfg.self_signed:type_name -> topo.SelfSignedCertCfg
+	12, // 16: topo.Node.ServicesEntry.value:type_name -> topo.Service
+	7,  // 17: topo.Node.InterfacesEntry.value:type_name -> topo.Interface
+	18, // [18:18] is the sub-list for method output_type
+	18, // [18:18] is the sub-list for method input_type
+	18, // [18:18] is the sub-list for extension type_name
+	18, // [18:18] is the sub-list for extension extendee
+	0,  // [0:18] is the sub-list for field type_name
 }
 
 func init() { file_topo_proto_init() }
@@ -1237,7 +1477,7 @@ func file_topo_proto_init() {
 			}
 		}
 		file_topo_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*Interface); i {
+			switch v := v.(*HostConstraint); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1249,7 +1489,7 @@ func file_topo_proto_init() {
 			}
 		}
 		file_topo_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*Link); i {
+			switch v := v.(*KernelParam); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1261,7 +1501,7 @@ func file_topo_proto_init() {
 			}
 		}
 		file_topo_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*Config); i {
+			switch v := v.(*BoundedInteger); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1273,7 +1513,7 @@ func file_topo_proto_init() {
 			}
 		}
 		file_topo_proto_msgTypes[5].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*CertificateCfg); i {
+			switch v := v.(*Interface); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1285,7 +1525,7 @@ func file_topo_proto_init() {
 			}
 		}
 		file_topo_proto_msgTypes[6].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*SelfSignedCertCfg); i {
+			switch v := v.(*Link); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1297,6 +1537,42 @@ func file_topo_proto_init() {
 			}
 		}
 		file_topo_proto_msgTypes[7].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*Config); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_topo_proto_msgTypes[8].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*CertificateCfg); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_topo_proto_msgTypes[9].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*SelfSignedCertCfg); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_topo_proto_msgTypes[10].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*Service); i {
 			case 0:
 				return &v.state
@@ -1309,11 +1585,17 @@ func file_topo_proto_init() {
 			}
 		}
 	}
-	file_topo_proto_msgTypes[4].OneofWrappers = []interface{}{
+	file_topo_proto_msgTypes[2].OneofWrappers = []interface{}{
+		(*HostConstraint_KernelConstraint)(nil),
+	}
+	file_topo_proto_msgTypes[3].OneofWrappers = []interface{}{
+		(*KernelParam_BoundedInteger)(nil),
+	}
+	file_topo_proto_msgTypes[7].OneofWrappers = []interface{}{
 		(*Config_Data)(nil),
 		(*Config_File)(nil),
 	}
-	file_topo_proto_msgTypes[5].OneofWrappers = []interface{}{
+	file_topo_proto_msgTypes[8].OneofWrappers = []interface{}{
 		(*CertificateCfg_SelfSigned)(nil),
 	}
 	type x struct{}
@@ -1322,7 +1604,7 @@ func file_topo_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_topo_proto_rawDesc,
 			NumEnums:      2,
-			NumMessages:   13,
+			NumMessages:   16,
 			NumExtensions: 0,
 			NumServices:   0,
 		},