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(3) 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(3)