diff --git a/tools/dissect-wireshark/README.md b/tools/dissect-wireshark/README.md
index 02497c7..d304ce6 100644
--- a/tools/dissect-wireshark/README.md
+++ b/tools/dissect-wireshark/README.md
@@ -17,6 +17,8 @@
 
 - NDN packets are encapsulated in Ethernet frames with EtherType 0x8624.
 
+- NDN packets are encapsulated in PPP frames with protocol type 0x0077.
+
 ## Available dissection features
 
 - When UDP packet is fragmented, the dissection is performed after the full IP reassembly.