Hi,

When I call pcap_set_buffer_size() on an actively using/running NIC, it gives 
me an error:
can't perform  operation on activated capture


Is there a way to change the pcap capture buffer size without deactivating it?

How does this buffer different from SO_RCVBUF?  It seems like SO_RCVBUF doesn't 
matter in this context anymore because libpcap goes through a different route 
in receiving packets?
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