diff --git a/internal/app/pfcp.go b/internal/app/pfcp.go
index dc2e818..d9dc110 100644
--- a/internal/app/pfcp.go
+++ b/internal/app/pfcp.go
@@ -116,7 +116,7 @@ func (p *PFCPServer) CreateSession(ue netip.Addr, uplinkTeid uint32, downlinkTei
 				ie.NewDestinationInterface(ie.DstInterfaceAccess),
 				ie.NewNetworkInstance(slice),
 				ie.NewOuterHeaderCreation(
-					0x01, // GTP/UDP/IPv4
+					0x10, // GTP/UDP/IPv4
 					downlinkTeid,
 					gNB.String(),
 					"", 0, 0, 0,