pcapinfo

    Host information
    ----------------
      Hostname      : fangorn.maddingue.net
      Aliases       : fangorn.local fangorn
      Pcap version  : libpcap version 0.8.3

    Devices information
    -------------------
    Device eth0 (default)
      Description       : No description available
      Link type         : Ethernet, no autonegotiation, 10baseT-HD, link ok
      Hardware address  : 00:0c:6e:0a:c3:ca
      Network address   : 10.0.1.51
      Network mask      : 255.255.255.0
      Flags             : up running broadcast multicast

    Device eth1
      Description       : No description available
      Link type         : Ethernet, no autonegotiation, 10baseT-HD, link ok
      Hardware address  : 00:26:54:0a:d8:4d
      Network address   : 192.168.1.51
      Network mask      : 255.255.255.0
      Flags             : up running broadcast multicast

The device marked as "(default)" is the one returned when calling "Net::Pcap::lookupdev()"

Some information like the link type can only be gathered with root privileges.

This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.