diff --git a/cmd/root.go b/cmd/root.go
index 54ea220..9708ab1 100644
--- a/cmd/root.go
+++ b/cmd/root.go
@@ -1,5 +1,5 @@
 /*
-Copyright © 2024 NAME HERE <EMAIL ADDRESS>
+Copyright © 2024 Matthew Stobbs <matthew@stobbs.ca>
 */
 package cmd
 
diff --git a/ipv4/reservation/reservation.go b/ipv4/reservation/reservation.go
index 9ec955c..5e9f60d 100644
--- a/ipv4/reservation/reservation.go
+++ b/ipv4/reservation/reservation.go
@@ -18,7 +18,7 @@ type ReservationV4 struct {
 
 func ReserveV4MacAddr(identifierType string, identifier string, addr string, hostname string, subnet int) *ReservationV4 {
 	r := &ReservationV4{
-		IdentifierType: types.Lookup(identifierType),
+		IdentifierType: types.LookupIdentifier(identifierType),
 		SubnetID:       subnet,
 		Identifier:     identifier,
 		Ipv4:           addr,
diff --git a/lib/types/identifier_string.go b/lib/types/identifier_string.go
index 6037e45..c1a1638 100644
--- a/lib/types/identifier_string.go
+++ b/lib/types/identifier_string.go
@@ -1,4 +1,4 @@
-// Code generated by "stringer -type=Identifier"; DO NOT EDIT.
+// Code generated by "stringer -linecomment -type=Identifier"; DO NOT EDIT.
 
 package types
 
@@ -17,12 +17,12 @@ func _() {
 }
 
 const (
-	_Identifier_name_0 = "HwAddressDuIDCircuitIdClientIdFlexId"
-	_Identifier_name_1 = "Invalid"
+	_Identifier_name_0 = "hwaddrduidcircuit-idclient-idflex-id"
+	_Identifier_name_1 = "invalid"
 )
 
 var (
-	_Identifier_index_0 = [...]uint8{0, 9, 13, 22, 30, 36}
+	_Identifier_index_0 = [...]uint8{0, 6, 10, 20, 29, 36}
 )
 
 func (i Identifier) String() string {
diff --git a/lib/types/types.go b/lib/types/types.go
index c89e2fe..660bfd1 100644
--- a/lib/types/types.go
+++ b/lib/types/types.go
@@ -2,22 +2,25 @@ package types
 
 import "strings"
 
+// Identifier as defined by the kea database entries. Values are hardcoded from
+// a running instance of schema version 22.1
 type Identifier int
 
 func (i Identifier) Int() int {
 	return int(i)
 }
 
-//go:generate stringer -type=Identifier
+//go:generate stringer -linecomment -type=Identifier
 const (
-	HwAddress Identifier = 0
-	DuID      Identifier = 1
-	CircuitId Identifier = 2
-	ClientId  Identifier = 3
-	FlexId    Identifier = 4
-	Invalid   Identifier = 255
+	HwAddress Identifier = 0   // hwaddr
+	DuID      Identifier = 1   // duid
+	CircuitId Identifier = 2   // circuit-id
+	ClientId  Identifier = 3   // client-id
+	FlexId    Identifier = 4   // flex-id
+	Invalid   Identifier = 255 // invalid
 )
 
+// TODO: is there a generator that can create the lookup table for me?
 var types = map[string]Identifier{
 	"macaddr":    HwAddress,
 	"hwaddr":     HwAddress,
@@ -28,7 +31,7 @@ var types = map[string]Identifier{
 	"invalid":    Invalid,
 }
 
-func Lookup(rtype string) Identifier {
+func LookupIdentifier(rtype string) Identifier {
 	rtype = strings.ToLower(rtype)
 	if t, ok := types[rtype]; ok == true {
 		return t