pcap sees its own frames

[Michiel Boland]

Hi.
It appears the when I send a frame with pcap_inject, and then do a pcap_next, I 
get back the same frame I just sent. Is there a way to turn this off?
There is a BIOCFEEDBACK ioctl on the underlying bpf fd but that does not appear 
to have any effect.

The reason I don't want this behaviour is that GNS3 does not work when 
connecting to a host via bpf; the router sees its own packets, which breaks 
things like IPv6 DAD, bridging, etc.

Cheers
Michiel