dissect-wireshark: Add support for dissecting of Ethernet frames (ethertype=0x8624)

Change-Id: I1cc8898076bd3f4d615045514907095c6a5f9149
Refs: #3092
diff --git a/tests/dissect-wireshark/README.md b/tests/dissect-wireshark/README.md
index 6de2a99..701f512 100644
--- a/tests/dissect-wireshark/README.md
+++ b/tests/dissect-wireshark/README.md
@@ -96,3 +96,12 @@
   packet 6.
 - data packet is properly dissected after a partial reconstruction of WebSocket
   conversation at packet 12.
+
+### 7. Ethernet
+
+Trace file: `ethernet.pcap`
+
+Trace summary: Short capture, containing an NDN interest multicasted directly in Ethernet frame.
+
+Expected result of the dissection:
+- interest packet is dissected from packet 6.