This is an excellent, short intro to the command-line network analyzer, tcpdump: https://danielmiessler.com/study/tcpdump/
To install tcpdump, on Debian-family distros:
$ sudo apt install tcpdump
Now try this, but maybe put on sunglasses first
$ sudo tcpdump -nnvvXSs 0
I actually think this is the way ahead in collecting stats on the SAFE-protocol networks; just got to devise the right filters.
EDIT: Changed 1514 (biggest ordinary frame) to 0 (catch every frame regardless of size) in order to catch jumbo frames.