Re: pcap_findalldevs() failing on FreeBSD 7.2

[Guy Harris <guy () alum mit edu>]

On Sep 24, 2009, at 10:18 PM, Aaron Turner wrote:

> Actually, none of his interfaces are being returned (nfe0, nfe1 and
> lo0).  I looked in the change log and don't see any mention of any
> improvements/fixes in pcap_finalldevs() since 0.9.7 so I figured I'd
> mention it.

On FreeBSD releases with getifaddrs(), pcap_findalldevs() should be  
using getifaddrs() to find all the network devices.

On all UN*Xes, it will also attempt to open each device it finds  
before adding it to the list of known devices, in an attempt to filter  
out devices the native capture mechanism doesn't support (e.g.,  
loopback devices on Solaris; merely rejecting all loopback devices is  
wrong, as many other OSes *do* support capturing on them, such as  
Linux, most if not all OSes with BPF, and Tru64 UNIX).
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