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diff -up dhcp-4.2.0/client/dhc6.c.honor-expired dhcp-4.2.0/client/dhc6.c
--- dhcp-4.2.0/client/dhc6.c.honor-expired 2010-10-07 12:55:37.000000000 +0200
+++ dhcp-4.2.0/client/dhc6.c 2010-10-07 12:56:43.000000000 +0200
@@ -1405,6 +1405,32 @@ start_info_request6(struct client_state
go_daemon();
}
+/* Run through the addresses in lease and return true if there's any unexpired.
+ * Return false otherwise.
+ */
+isc_boolean_t
+unexpired_address_in_lease(struct dhc6_lease *lease)
+{
+ struct dhc6_ia *ia;
+ struct dhc6_addr *addr;
+
+ for (ia = lease->bindings ; ia != NULL ; ia = ia->next) {
+ for (addr = ia->addrs ; addr != NULL ; addr = addr->next) {
+ if (addr->flags & DHC6_ADDR_EXPIRED)
+ continue;
+
+ if (addr->starts + addr->max_life > cur_time) {
+ return ISC_TRUE;
+ }
+ }
+ }
+
+ log_info("PRC: Previous lease is devoid of active addresses."
+ " Re-initializing.");
+
+ return ISC_FALSE;
+}
+
/*
* start_confirm6() kicks off an "init-reboot" version of the process, at
* startup to find out if old bindings are 'fair' and at runtime whenever
@@ -1417,8 +1446,10 @@ start_confirm6(struct client_state *clie
/* If there is no active lease, there is nothing to check. */
if ((client->active_lease == NULL) ||
- !active_prefix(client) ||
- client->active_lease->released) {
+ !active_prefix(client) ||
+ client->active_lease->released ||
+ !unexpired_address_in_lease(client->active_lease)) {
+ dhc6_lease_destroy(&client->active_lease, MDL);
start_init6(client);
return;
}