diff --git a/pingtunnel.go b/pingtunnel.go
index 8f54e79..090f6a0 100644
--- a/pingtunnel.go
+++ b/pingtunnel.go
@@ -16,7 +16,7 @@ import (
 )
 
 const (
-	DATA uint32 = 0xDEADBEEF
+	DATA uint32 = 0x01010101
 )
 
 // An Echo represents an ICMP echo request or reply message body.