diff --git a/exttypes.go b/exttypes.go
new file mode 100644
index 0000000..d43c6af
--- /dev/null
+++ b/exttypes.go
@@ -0,0 +1,69 @@
+package dsnet
+
+import (
+	"net"
+	"strings"
+
+	"golang.zx2c4.com/wireguard/wgctrl/wgtypes"
+)
+
+type JSONIPNet struct {
+	IPNet net.IPNet
+}
+
+func (n JSONIPNet) MarshalJSON() ([]byte, error) {
+	return []byte("\"" + n.IPNet.String() + "\""), nil
+}
+
+func (n *JSONIPNet) UnmarshalJSON(b []byte) error {
+	cidr := strings.Trim(string(b), "\"")
+	IP, IPNet, err := net.ParseCIDR(cidr)
+	IPNet.IP = IP
+	n.IPNet = *IPNet
+	return err
+}
+
+func (n *JSONIPNet) String() string {
+	return n.IPNet.String()
+}
+
+type JSONKey struct {
+	Key wgtypes.Key
+}
+
+func (k JSONKey) MarshalJSON() ([]byte, error) {
+	return []byte("\"" + k.Key.String() + "\""), nil
+}
+
+func (k JSONKey) PublicKey() JSONKey {
+	return JSONKey{
+		Key: k.Key.PublicKey(),
+	}
+}
+
+func (k *JSONKey) UnmarshalJSON(b []byte) error {
+	b64Key := strings.Trim(string(b), "\"")
+	key, err := wgtypes.ParseKey(b64Key)
+	k.Key = key
+	return err
+}
+
+func GenerateJSONPrivateKey() JSONKey {
+	privateKey, err := wgtypes.GeneratePrivateKey()
+
+	check(err)
+
+	return JSONKey{
+		Key: privateKey,
+	}
+}
+
+func GenerateJSONKey() JSONKey {
+	privateKey, err := wgtypes.GenerateKey()
+
+	check(err)
+
+	return JSONKey{
+		Key: privateKey,
+	}
+}
diff --git a/types.go b/types.go
index 2c3304a..f8b2b09 100644
--- a/types.go
+++ b/types.go
@@ -4,7 +4,6 @@ import (
 	"encoding/json"
 	"io/ioutil"
 	"net"
-	"strings"
 	"time"
 
 	"golang.zx2c4.com/wireguard/wgctrl/wgtypes"
@@ -151,64 +150,3 @@ type Dsnet struct {
 	ListenPort int
 	Peers      []Peer
 }
-
-type JSONIPNet struct {
-	IPNet net.IPNet
-}
-
-func (n JSONIPNet) MarshalJSON() ([]byte, error) {
-	return []byte("\"" + n.IPNet.String() + "\""), nil
-}
-
-func (n *JSONIPNet) UnmarshalJSON(b []byte) error {
-	cidr := strings.Trim(string(b), "\"")
-	IP, IPNet, err := net.ParseCIDR(cidr)
-	IPNet.IP = IP
-	n.IPNet = *IPNet
-	return err
-}
-
-func (n *JSONIPNet) String() string {
-	return n.IPNet.String()
-}
-
-type JSONKey struct {
-	Key wgtypes.Key
-}
-
-func (k JSONKey) MarshalJSON() ([]byte, error) {
-	return []byte("\"" + k.Key.String() + "\""), nil
-}
-
-func (k JSONKey) PublicKey() JSONKey {
-	return JSONKey{
-		Key: k.Key.PublicKey(),
-	}
-}
-
-func (k *JSONKey) UnmarshalJSON(b []byte) error {
-	b64Key := strings.Trim(string(b), "\"")
-	key, err := wgtypes.ParseKey(b64Key)
-	k.Key = key
-	return err
-}
-
-func GenerateJSONPrivateKey() JSONKey {
-	privateKey, err := wgtypes.GeneratePrivateKey()
-
-	check(err)
-
-	return JSONKey{
-		Key: privateKey,
-	}
-}
-
-func GenerateJSONKey() JSONKey {
-	privateKey, err := wgtypes.GenerateKey()
-
-	check(err)
-
-	return JSONKey{
-		Key: privateKey,
-	}
-}