https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=3096
--- Comment #49 from Guy Harris <guy@xxxxxxxxxxxx> 2012-02-14 10:54:04 PST ---
(In reply to comment #48)
> (In reply to comment #46)
> > so it explicitly speaks of multiple IDBs. (Arguably, "dumpcap -i any -w
> > file.pcapng" should write IDBs for the real interfaces rather than the "any"
> > interface, but that's a bit more work; what's really wanted there is some help
> > from libpcap.)
> I think dumpcap -i any -w file.pcapng should only use a single IDB specifying
> the any interface (only on Linux, of course). Since this is what the user
> specifies
What the user specified is "capture on all interfaces", not "capture on the
'any' interface"; there is no network interface named "any".
Think of it as being like "ls *". "ls *" doesn't just print "*", it prints the
names of all files it matches; similarly users might want - and at least some
*do* want, as expressed by messages to tcpdump-workers and libpcap/tcpdump bugs
- to know which particular real interface packets came in on.
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