sd_dhcp_client *client = userdata;
_cleanup_free_ DHCPMessage *message = NULL;
- const struct ether_addr zero_mac = {};
- const struct ether_addr *expected_chaddr = NULL;
+ const uint8_t *expected_chaddr = NULL;
uint8_t expected_hlen = 0;
ssize_t len, buflen;
if (client->arp_type == ARPHRD_ETHER) {
expected_hlen = ETH_ALEN;
- expected_chaddr = (const struct ether_addr *) &client->mac_addr;
- } else {
- /* Non-Ethernet links expect zero chaddr */
- expected_hlen = 0;
- expected_chaddr = &zero_mac;
+ expected_chaddr = &client->mac_addr[0];
}
if (message->hlen != expected_hlen) {
return 0;
}
- if (memcmp(&message->chaddr[0], expected_chaddr, ETH_ALEN)) {
+ if (expected_hlen > 0 && memcmp(&message->chaddr[0], expected_chaddr, expected_hlen)) {
log_dhcp_client(client, "Received chaddr does not match expected: ignoring");
return 0;
}