The patch does not work.
the glibc is 2.1.1-15mdk
SOL_PACKET is defined in <bits/socket.h>
It silently fails on Linux Redhat 7.2 with kernel 2.4.7-10smp
(glibc-2.2.4-13) too!
> We may have to do the same for PACKET_MR_PROMISC, PACKET_MR_ALLMULTI,
> and PACKET_ADD_MEMBERSHIP, but so it goes.
the compiler doesn't give any warnings about undeclared variables...
anyway, let's try it!
it's strange, the setsockopt() fails to do the work without returning -1
Here is a piece of my code:
static pcap_t *pcap_d = NULL; /* pcap descriptor */
static char interface[256]; /* interface to sniff */
int main( /* ... */ )
{
/* ... */
strncpy(interface, argv[1], sizeof(interface));
/* ... */
/* open interface and set promiscuous mode */
pcap_d = pcap_open_live(interface, 2048, 1, 0, pcap_err);
if (! pcap_d) {
fprintf(stderr, "%s: %s\n", interface, pcap_err);
exit(1);
}
/* ... */
}
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