diff --git a/base.go b/base.go
index 89e67b9..cce932f 100644
--- a/base.go
+++ b/base.go
@@ -26,6 +26,7 @@ const (
 	SATAMessaging        DeviceNodeSubType = 18
 	MacMessagingSubType  DeviceNodeSubType = 11
 	IPv4MessagingSubType DeviceNodeSubType = 12
+	IPv6MessagingSubType DeviceNodeSubType = 13
 )
 
 const EndOfEntireDevicePath DeviceNodeSubType = 0xFF
diff --git a/ipv6.go b/ipv6.go
index 49e0e7b..ceb0d2e 100644
--- a/ipv6.go
+++ b/ipv6.go
@@ -20,7 +20,7 @@ func (ip *Ipv6DevicePath) Type() DeviceNodeType {
 }
 
 func (ip *Ipv6DevicePath) SubType() DeviceNodeSubType {
-	return IPv4MessagingSubType
+	return IPv6MessagingSubType
 }
 
 func (ip *Ipv6DevicePath) Bytes() []byte {