diff --git a/api/instance/v1/instance_sdk.go b/api/instance/v1/instance_sdk.go
index 5ea7405bc..37364e407 100644
--- a/api/instance/v1/instance_sdk.go
+++ b/api/instance/v1/instance_sdk.go
@@ -1019,7 +1019,7 @@ type ServerIPv6 struct {
 	// Address display the server IPv6 IP-Address
 	Address net.IP `json:"address"`
 	// Gateway display the IPv6 IP-addresses gateway
-	Gateway string `json:"gateway"`
+	Gateway net.IP `json:"gateway"`
 	// Netmask display the IPv6 IP-addresses CIDR netmask
 	Netmask string `json:"netmask"`
 }