L2TP improvements - cookie length detection, UDP encapsulation and more

This issue was migrated from bug 16565 in our old bug tracker.

Original bug information:

Reporter: Peter Paluch
Status: IN_PROGRESS
Product: Wireshark
Component: Dissection engine (libwireshark)
OS: All
Platform: All
Version: 3.2.3

Attachments:

l2tp_v3_auth_4byte.pcapng: L2TPv3 with 4B cookies
l2tp_v3_auth_8byte.pcapng: L2TPv3 with 8B cookies
l2tp_v3_basic.pcapng: L2TPv3 with Cisco AVPs
l2tp_v3_ietf.pcapng: L2TPv3 with IETF AVPs
l2tp_v3_udp.pcapng: L2TPv3 with UDP encap

To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information