IP packet header visualization software

[DES]

Hello FreeBSD-Net,

does anybody remember, around year 2004, there was a software 
application available (either as port, or package). Unfortunately I do 
not recall the application name and I'm not able to find it again, 
although I've reviewed the Ports collection from year 2005 which I have 
on 3 DVDs. I do not remember if the application captured data from the 
network interface by itself, or used tcpdump output, that actually 
doesn't matter. What matters is that this app draw a picture of the 
selected IP packet's header, similar to the one in RFC791 at page 11, 
chapter "3.1. Internet Header Format". The picture drawn was 
minimalistic and in colors (green, yellow), and it showed the field 
values from the actual capture. I've ran it under TWM, and it looked 
close to that one, but showing captured values instead of (or along 
with) field names -

Appreciate if anybody remembers that application by a chance and could 
tell its name.

thank you

3des