any way to write datalink packets?

["kashif javed" <kashifj () gmail com>]

Dear,

As pointed out by Richard Stevens in the chapter 26 of
his book " UNIX Network Programming vol1: 2nd
edition", pcap supports packets while reading. I want to
ask is there any way to write datalink packets? I mean
if an application sends out a packet, can it be captured
by the pcap?

Moreover , can i use pcap for capturing packets on
IEEE 802.11 or WLAN, if not, can you please provide me
a solution?

Thanks

Kashif
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