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-rw-r--r--networking/udhcp/files.c6
-rw-r--r--networking/udhcp/leases.c4
2 files changed, 8 insertions, 2 deletions
diff --git a/networking/udhcp/files.c b/networking/udhcp/files.c
index 1c8808c..5b90e26 100644
--- a/networking/udhcp/files.c
+++ b/networking/udhcp/files.c
@@ -195,7 +195,11 @@ void FAST_FUNC read_leases(const char *file)
uint32_t static_nip;
if (expires <= 0)
- continue;
+ /* We keep expired leases: add_lease() will add
+ * a lease with 0 seconds remaining.
+ * Fewer IP address changes this way for mass reboot scenario.
+ */
+ expires = 0;
/* Check if there is a different static lease for this IP or MAC */
static_nip = get_static_nip_by_mac(server_config.static_leases, lease.lease_mac);
diff --git a/networking/udhcp/leases.c b/networking/udhcp/leases.c
index 844bb60..411b749 100644
--- a/networking/udhcp/leases.c
+++ b/networking/udhcp/leases.c
@@ -17,7 +17,9 @@ static struct dyn_lease *oldest_expired_lease(void)
/* Unexpired leases have g_leases[i].expires >= current time
* and therefore can't ever match */
for (i = 0; i < server_config.max_leases; i++) {
- if (g_leases[i].expires < oldest_time) {
+ if (g_leases[i].expires == 0 /* empty entry */
+ || g_leases[i].expires < oldest_time
+ ) {
oldest_time = g_leases[i].expires;
oldest_lease = &g_leases[i];
}