dhcp/dhcp-3.0.5-dhclient-decline-backoff.patch

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2008-01-11 00:19:03 +00:00
--- dhcp-3.0.5/client/dhclient.c.decline 2007-03-30 15:29:58.000000000 -0400
+++ dhcp-3.0.5/client/dhclient.c 2007-03-30 15:50:25.000000000 -0400
@@ -934,6 +934,7 @@
void *cpp;
{
struct client_state *client = cpp;
+ enum dhcp_state init_state = client->state;
ASSERT_STATE(state, S_INIT);
@@ -946,9 +947,16 @@
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. */
+ add_timeout(cur_time + ((1 + (random() >> 2)) % client->config->backoff_cutoff), send_discover, client, 0, 0);
+ }
}
/* state_selecting is called when one or more DHCPOFFER packets have been
@@ -1215,6 +1223,7 @@
send_decline (client);
destroy_client_lease (client -> new);
client -> new = (struct client_lease *)0;
+ client -> state = S_DECLINED;
state_init (client);
return;
}
@@ -3183,6 +3192,7 @@
case S_INIT:
case S_REBINDING:
case S_STOPPED:
+ case S_DECLINED:
break;
}
client -> state = S_INIT;
--- dhcp-3.0.5/includes/dhcpd.h.decline 2007-03-30 15:30:14.000000000 -0400
+++ dhcp-3.0.5/includes/dhcpd.h 2007-03-30 15:50:53.000000000 -0400
@@ -704,7 +704,8 @@
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