diff -up dhcp-4.1.1/client/dhclient.c.backoff dhcp-4.1.1/client/dhclient.c --- dhcp-4.1.1/client/dhclient.c.backoff 2010-01-20 17:14:37.000000000 +0100 +++ dhcp-4.1.1/client/dhclient.c 2010-01-20 17:14:37.000000000 +0100 @@ -1187,6 +1187,7 @@ void state_init (cpp) void *cpp; { struct client_state *client = cpp; + enum dhcp_state init_state = client->state; ASSERT_STATE(state, S_INIT); @@ -1199,9 +1200,16 @@ 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. */ + add_timeout(cur_time + ((1 + (random() >> 2)) % client->config->backoff_cutoff), send_discover, client, 0, 0); + } } /* @@ -1480,6 +1488,7 @@ 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; } @@ -3689,6 +3698,7 @@ void client_location_changed () case S_INIT: case S_REBINDING: case S_STOPPED: + case S_DECLINED: break; } client -> state = S_INIT; diff -up dhcp-4.1.1/includes/dhcpd.h.backoff dhcp-4.1.1/includes/dhcpd.h --- dhcp-4.1.1/includes/dhcpd.h.backoff 2010-01-20 17:14:37.000000000 +0100 +++ dhcp-4.1.1/includes/dhcpd.h 2010-01-20 17:14:37.000000000 +0100 @@ -1017,7 +1017,8 @@ 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