Wireshark improvements

From Linux NFS

Wireshark (previously known as Ethereal) is invaluable for understanding what's happening on the wire between a client and server, but it could be better. Some examples:

• General maintenance, bug-fixing
• (probably hard) Given knowledge of the appropriate keys, decrypt and dissect privacy-encoded calls and replies.

Is all of this done now?:

• callback channel decoding: in 4.1 case, this is easy. In 4.0 case, requires seeing the setclientid call.
• Update to 4.1. (Mostly done: may still be some odds an ends missing, though.
• Add decoders for rpcbind protocol versions 3 and 4. (Done or not?)
• Test to make sure all existing NFS and RPC related decoders work nicely with IPv6. (?)
• Given knowledge of the appropriate keys, decrypt and dissect privacy-encoded calls and replies.