[tcpdump-workers] Compile libpcap with DLT_LINUX_SLL2

[Petr Vorel]

Hi Guy,

> > BTW man pages (pcap.3pcap.in, pcap_datalink.3pcap.in, pcap_loop.3pcap and
> > pcap_next_ex.3pcap) mention only DLT_LINUX_SLL.

> Fixed in commit ffb99eceefd31771a4aa89f0da5d02a3c53cfd03.
Thanks a lot!

BTW how about DLT_LINUX_SLL2 as the default? What does it block?

Kind regards,
Petr