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-rw-r--r--discover/network.c12
1 files changed, 11 insertions, 1 deletions
diff --git a/discover/network.c b/discover/network.c
index 6ae4417..8ca4561 100644
--- a/discover/network.c
+++ b/discover/network.c
@@ -497,7 +497,7 @@ static void configure_interface(struct network *network,
static int network_handle_nlmsg(struct network *network, struct nlmsghdr *nlmsg)
{
bool have_ifaddr, have_ifname;
- struct interface *interface;
+ struct interface *interface, *tmp;
struct ifinfomsg *info;
struct rtattr *attr;
unsigned int mtu;
@@ -562,6 +562,16 @@ static int network_handle_nlmsg(struct network *network, struct nlmsghdr *nlmsg)
interface->state = IFSTATE_NEW;
memcpy(interface->hwaddr, ifaddr, sizeof(interface->hwaddr));
strncpy(interface->name, ifname, sizeof(interface->name) - 1);
+
+ list_for_each_entry(&network->interfaces, tmp, list)
+ if (memcmp(interface->hwaddr, tmp->hwaddr,
+ sizeof(interface->hwaddr)) == 0) {
+ pb_log("%s: %s has duplicate MAC address, ignoring\n",
+ __func__, interface->name);
+ talloc_free(interface);
+ return -1;
+ }
+
list_add(&network->interfaces, &interface->list);
create_interface_dev(network, interface);
}
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