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diff -up dhcp-4.2.0/client/dhclient.c.backoff dhcp-4.2.0/client/dhclient.c
--- dhcp-4.2.0/client/dhclient.c.backoff 2010-07-21 13:37:03.000000000 +0200
+++ dhcp-4.2.0/client/dhclient.c 2010-07-21 13:38:31.000000000 +0200
@@ -1208,6 +1208,8 @@ void state_init (cpp)
void *cpp;
{
struct client_state *client = cpp;
+ enum dhcp_state init_state = client->state;
+ struct timeval tv;
ASSERT_STATE(state, S_INIT);
@@ -1220,9 +1222,18 @@ void state_init (cpp)
client -> first_sending = cur_time;
client -> interval = client -> config -> initial_interval;
- /* Add an immediate timeout to cause the first DHCPDISCOVER packet
- to go out. */
- send_discover (client);
+ if (init_state != S_DECLINED) {
+ /* Add an immediate timeout to cause the first DHCPDISCOVER packet
+ to go out. */
+ send_discover(client);
+ } else {
+ /* We've received an OFFER and it has been DECLINEd by dhclient-script.
+ * wait for a random time between 1 and backoff_cutoff seconds before
+ * trying again. */
+ tv . tv_sec = cur_time + ((1 + (random() >> 2)) % client->config->backoff_cutoff);
+ tv . tv_usec = 0;
+ add_timeout(&tv, send_discover, client, 0, 0);
+ }
}
/*
@@ -1501,6 +1512,7 @@ void bind_lease (client)
send_decline (client);
destroy_client_lease (client -> new);
client -> new = (struct client_lease *)0;
+ client -> state = S_DECLINED;
state_init (client);
return;
}
@@ -3711,6 +3723,7 @@ void client_location_changed ()
case S_INIT:
case S_REBINDING:
case S_STOPPED:
+ case S_DECLINED:
break;
}
client -> state = S_INIT;
diff -up dhcp-4.2.0/includes/dhcpd.h.backoff dhcp-4.2.0/includes/dhcpd.h
--- dhcp-4.2.0/includes/dhcpd.h.backoff 2010-07-21 13:29:05.000000000 +0200
+++ dhcp-4.2.0/includes/dhcpd.h 2010-07-21 13:38:31.000000000 +0200
@@ -1056,7 +1056,8 @@ enum dhcp_state {
S_BOUND = 5,
S_RENEWING = 6,
S_REBINDING = 7,
- S_STOPPED = 8
+ S_STOPPED = 8,
+ S_DECLINED = 9
};
/* Authentication and BOOTP policy possibilities (not all values work