Commit 0928a95f authored by Jan Kiszka's avatar Jan Kiszka Committed by Anthony Liguori
Browse files

slirp: Reassign same address to same DHCP client

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: default avatarJan Kiszka <>
parent f8d926e9
......@@ -49,13 +49,15 @@ if (slirp_debug & DBG_CALL) { fprintf(dfd, fmt, ## __VA_ARGS__); fflush(dfd); }
#define dprintf(fmt, ...)
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++) {
if (!bootp_clients[i].allocated)
bc = &bootp_clients[i];
if (!bc->allocated || !memcmp(macaddr, bc->macaddr, 6))
goto found;
return NULL;
......@@ -192,7 +194,7 @@ static void bootp_reply(const struct bootp_t *bp)
if (!bc) {
bc = get_new_addr(&daddr.sin_addr);
bc = get_new_addr(&daddr.sin_addr, client_ethaddr);
if (!bc) {
dprintf("no address left\n");
Markdown is supported
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment