+++ /dev/null
-diff -up dhcp-4.2.0/client/dhclient.c.inherit dhcp-4.2.0/client/dhclient.c
---- dhcp-4.2.0/client/dhclient.c.inherit 2010-07-21 14:33:44.000000000 +0200
-+++ dhcp-4.2.0/client/dhclient.c 2010-07-21 14:40:05.000000000 +0200
-@@ -2322,6 +2322,7 @@ void send_request (cpp)
- {
- struct client_state *client = cpp;
-
-+ int i;
- int result;
- int interval;
- struct sockaddr_in destination;
-@@ -2381,6 +2382,22 @@ void send_request (cpp)
- /* Now do a preinit on the interface so that we can
- discover a new address. */
- script_init (client, "PREINIT", (struct string_list *)0);
-+
-+ /* Has an active lease */
-+ if (client -> interface -> addresses != NULL) {
-+ for (i = 0; i < client -> interface -> address_count; i++) {
-+ if (client -> active &&
-+ client -> active -> is_bootp &&
-+ client -> active -> expiry > cur_time &&
-+ client -> interface -> addresses[i].s_addr != 0 &&
-+ client -> active -> address.len == 4 &&
-+ memcpy (client -> active -> address.iabuf, &(client -> interface -> addresses[i]), 4) == 0) {
-+ client_envadd (client, "", "keep_old_ip", "%s", "yes");
-+ break;
-+ }
-+ }
-+ }
-+
- if (client -> alias)
- script_write_params (client, "alias_",
- client -> alias);