Hello,
In OVS userspace implementation(See below), looks like, given a dest IP,
multiple ARP entries are allowed as long as bridge-names are different for
the same dest IP.
But, is there real scenario where multiple ARP entries for the same dest IP
(because of different bridge-name)?
int
tnl_neigh_lookup(const char br_name[IFNAMSIZ], const struct in6_addr *dst,
struct eth_addr *mac)
{
struct tnl_neigh_entry *neigh;
int res = ENOENT;
neigh = tnl_neigh_lookup__(br_name, dst);
if (neigh) {
*mac = neigh->mac;
res = 0;
}
return res;
}
static struct tnl_neigh_entry *
tnl_neigh_lookup__(const char br_name[IFNAMSIZ], const struct in6_addr *dst)
{
struct tnl_neigh_entry *neigh;
uint32_t hash;
hash = tnl_neigh_hash(dst);
CMAP_FOR_EACH_WITH_HASH (neigh, cmap_node, hash, &table) {
if (ipv6_addr_equals(&neigh->ip, dst) && !strcmp(neigh->br_name,
br_name)) {
neigh->expires = time_now() + NEIGH_ENTRY_DEFAULT_IDLE_TIME;
return neigh;
}
}
return NULL;
}
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