In case a client restarts a DHCP recovery without releasing its old
address, reassign the same address to prevent consuming free addresses
and moving away from the standard client address.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
#define dprintf(fmt, ...)
#endif
#define dprintf(fmt, ...)
#endif
-static BOOTPClient *get_new_addr(struct in_addr *paddr)
+static BOOTPClient *get_new_addr(struct in_addr *paddr,
+ const uint8_t *macaddr)
{
BOOTPClient *bc;
int i;
for(i = 0; i < NB_ADDR; i++) {
{
BOOTPClient *bc;
int i;
for(i = 0; i < NB_ADDR; i++) {
- if (!bootp_clients[i].allocated)
+ bc = &bootp_clients[i];
+ if (!bc->allocated || !memcmp(macaddr, bc->macaddr, 6))
goto found;
}
return NULL;
goto found;
}
return NULL;
- bc = get_new_addr(&daddr.sin_addr);
+ bc = get_new_addr(&daddr.sin_addr, client_ethaddr);
if (!bc) {
dprintf("no address left\n");
return;
if (!bc) {
dprintf("no address left\n");
return;