Re: libpcap: patches required for OpenSolaris/SXCE

[Darren Reed <Darren.Reed () Sun COM>]

Guy Harris wrote:
> On Nov 29, 2009, at 11:43 PM, Darren Reed wrote:
> ...
> > When there is no network interface specified with
> > -i, what I expect from "tcpdump -L" is for tcpdump to
> > list all of the DLTs that are available for selection
> > with -y.
>
> What you *should* expect is all the DLTs *that are available for the 
> default interface*.  "All of the DLTs that are available for selection 
> with -y" is meaningless without specifying an interface - you can't 
> select an DLT until you've first selected an interface, and if you 
> don't select an interface, the first interface available in the 
> "tcpdump -D" list is chosen by default.

And that is what it does.

In that case, I think the output of "tcudmp -L" is just confusing.

When I run tcpdump without specifying an interface with -i, it does 
print out the network interface name:
# tcpdump
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on tun0, link-type RAW (Raw IP), capture size 96 bytes

... I think the output of "tcpdump -L" could do with mentioning the link 
name.

Darren

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