/* Routing Table Entries: */
struct route {
IPaddr rt_net; /* network address for this route */
IPaddr rt_mask; /* mask for this route */
IPaddr rt_gw; /* next IP hop */
u_short rt_metric; /* distance metric */
u_short rt_ifnum; /* interface number */
short rt_key; /* sort key */
short rt_ttl; /* time to live (seconds) */
struct route *rt_next; /* next entry for this hash value */
/* stats */
int rt_refcnt; /* current reference count */
int rt_usecnt; /* total use count so far */
};