diff --git a/internal/dhcp6/dhcp6.go b/internal/dhcp6/dhcp6.go
index 41a5954..826fd00 100644
--- a/internal/dhcp6/dhcp6.go
+++ b/internal/dhcp6/dhcp6.go
@@ -124,7 +124,7 @@ func NewClient(cfg ClientConfig) (*Client, error) {
 
 		duid = &dhcpv6.Duid{
 			Type:          dhcpv6.DUID_LLT,
-			HwType:        iana.HwTypeEthernet,
+			HwType:        iana.HWTypeEthernet,
 			Time:          dhcpv6.GetTime(),
 			LinkLayerAddr: iface.HardwareAddr,
 		}