[Winpcap-users] How will winpcap recognize 2 realtek 8139 adapters

[Bhuvanes V]

Hi all,
         I have a system with 2 realtek 8139 adapters. I need to send
layer 2 STP packets on these adapters.But when i use
"pcap_findalldevs(&alldevs, errbuf)" function to list the devices in
my system, it just show only single adapter(i.e., RTL8139).
1) How can i send packets on particular realtek 8139 adapter interface
at link layer level?

2)How can I get all interfaces that are having same names using
winpcap functions?.

Thanks and Regards,
Bhuvan.