hi,
> Does the linux kernel cache the source IP of unsolicited ARP requests?
> If so, does it cache Gratuitous ARP?
just guessing but net/ipv4/arp.c arp_process() has some lines
like these:
#ifdef CONFIG_IP_ACCEPT_UNSOLICITED_ARP
/* Unsolicited ARP is not accepted by default.
It is possible, that this option should be enabled for some
devices (strip is candidate)
*/
if (n == NULL &&
arp->ar_op == __constant_htons(ARPOP_REPLY) &&
inet_addr_type(sip) == RTN_UNICAST)
n = __neigh_lookup(&arp_tbl, &sip, dev, -1);
#endif
- does it help?
kenji
-
: send the line "unsubscribe linux-net" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
