linux man page for pcap-linktype

PCAP-LINKTYPE(7)					 Miscellaneous Information Manual					  PCAP-LINKTYPE(7)

NAME
       pcap-linktype - link-layer header types supported by libpcap

DESCRIPTION
       For  a  live capture or ``savefile'', libpcap supplies, as the return value of the pcap_datalink(3PCAP) routine, a value that indicates the
       type of link-layer header at the beginning of the packets it provides.  This is not necessarily the type  of  link-layer  header  that  the
       packets	being  captured  have  on the network from which they're being captured; for example, packets from an IEEE 802.11 network might be
       provided by libpcap with Ethernet headers that the network adapter or the network adapter driver generates from the  802.11  headers.   The
       names for those values begin with DLT_, so they are sometimes called "DLT_ values".

       The  values  stored  in	the  link-layer  header  type  field in the savefile header are, in most but not all cases, the same as the values
       returned by pcap_datalink().  The names for those values begin with LINKTYPE_.

       The link-layer header types supported by libpcap are described at http://www.tcpdump.org/linktypes.html.

SEE ALSO
       pcap_datalink(3PCAP)

								  23 October 2008						  PCAP-LINKTYPE(7)