diff --git a/tun_other.go b/tun_other.go
index 06ad2d2..d0dee67 100644
--- a/tun_other.go
+++ b/tun_other.go
@@ -7,14 +7,6 @@ import (
 	"os"
 )
 
-func Open(name string) (uintptr, error) {
-	return 0, os.ErrInvalid
-}
-
-func Configure(name string, inet4Address netip.Prefix, inet6Address netip.Prefix, mtu uint32, autoRoute bool) error {
-	return os.ErrInvalid
-}
-
-func UnConfigure(name string, inet4Address netip.Prefix, inet6Address netip.Prefix, autoRoute bool) error {
-	return os.ErrInvalid
+func Open(name string, inet4Address netip.Prefix, inet6Address netip.Prefix, mtu uint32, autoRoute bool) (Tun, error) {
+	return nil, os.ErrInvalid
 }