time_t grat_arp_lock; /* Gratuitous ARP lock expiration time. */
uint8_t mac[ETH_ADDR_LEN]; /* Known MAC address. */
uint16_t vlan; /* VLAN tag. */
- int port; /* Port on which MAC was most recently seen. */
tag_type tag; /* Tag for this learning entry. */
+
+ /* Learned port. */
+ union {
+ int i;
+ } port;
};
int mac_entry_age(const struct mac_entry *);