misc/40057: tcpdump -w should document what packets are saved

[Aleksej Saushev <asau%inbox.ru@localhost>]

>Number:         40057
>Category:       misc
>Synopsis:       tcpdump(1) should document what packets are saved when using -w
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    misc-bug-people
>State:          open
>Class:          doc-bug
>Submitter-Id:   net
>Arrival-Date:   Fri Nov 28 17:20:00 +0000 2008
>Originator:     Aleksej Saushev <asau%inbox.ru@localhost>
>Release:        NetBSD 5.99.01
>Organization:
>Environment:
System: NetBSD asau.local 5.99.01 NetBSD 5.99.01 (KERN) #0: Wed Nov 5 20:10:09 
MSK 2008 asau%asau.local@localhost:/usr/obj/sys/arch/i386/compile/KERN i386
Architecture: i386
Machine: i386
>Description:
        tcpdump(1) reads:

        -w    Write the raw packets to file rather than parsing  and  printing
              them  out.

        Experience shows that those packets are ethernet frames for ethernet
        interfaces. It would be nice to clarify that in the manual page.
>How-To-Repeat:
        Read the man page. Wonder, what those packets are.
>Fix: