On Aug 16, 2011, at 5:10 AM, Doktor Bernd wrote: > Two questions: > - Do the two pcap_open_live() calls influence the hardware in anyway and have > side effects on each other or are they bound to the handle and I can rely on > the parameters I give to be set?
For LAN hardware, the "promisc" argument to pcap_open_live() affects whether the interface is put in promiscuous mode; all handles will be in promiscuous mode if any are (or, for that matter, if any other process has turned on promiscuous mode directly rather than through libpcap). > - Do the parameters influence pcap_sendpacket() in any way? From the > documentation I assume that they are only for capturing from that interface. None of them should affect pcap_sendpacket() directly; perhaps running in promiscuous mode will, for example, cause the network adapter to be busier, which might slow down its sending of packets to some degree.- This is the tcpdump-workers list. Visit https://cod.sandelman.ca/ to unsubscribe.
