mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-26 17:01:14 +00:00
50b663de47
Patch sets the source IP address of DHCP request messages during rebind to the IP address assigned to the udhcpc client. Source address 0.0.0.0 can only be used by a client prior to obtaining its IP address (see RFC2131 § 4.1). Source IP address behavior lines up now with the ISC dhcp client implementation for DHCP request messages during rebind and DHCP release messages. Signed-off-by: Hans Dedecker <dedeckeh@gmail.com> SVN-Revision: 40878
54 lines
1.9 KiB
Diff
54 lines
1.9 KiB
Diff
Index: busybox-1.22.1/networking/udhcp/dhcpc.c
|
|
===================================================================
|
|
--- busybox-1.22.1.orig/networking/udhcp/dhcpc.c
|
|
+++ busybox-1.22.1/networking/udhcp/dhcpc.c
|
|
@@ -659,10 +659,10 @@ static void add_client_options(struct dh
|
|
* client reverts to using the IP broadcast address.
|
|
*/
|
|
|
|
-static int raw_bcast_from_client_config_ifindex(struct dhcp_packet *packet)
|
|
+static int raw_bcast_from_client_config_ifindex(struct dhcp_packet *packet, uint32_t src_nip)
|
|
{
|
|
return udhcp_send_raw_packet(packet,
|
|
- /*src*/ INADDR_ANY, CLIENT_PORT,
|
|
+ /*src*/ src_nip, CLIENT_PORT,
|
|
/*dst*/ INADDR_BROADCAST, SERVER_PORT, MAC_BCAST_ADDR,
|
|
client_config.ifindex);
|
|
}
|
|
@@ -673,7 +673,7 @@ static int bcast_or_ucast(struct dhcp_pa
|
|
return udhcp_send_kernel_packet(packet,
|
|
ciaddr, CLIENT_PORT,
|
|
server, SERVER_PORT);
|
|
- return raw_bcast_from_client_config_ifindex(packet);
|
|
+ return raw_bcast_from_client_config_ifindex(packet, ciaddr);
|
|
}
|
|
|
|
/* Broadcast a DHCP discover packet to the network, with an optionally requested IP */
|
|
@@ -701,7 +701,7 @@ static NOINLINE int send_discover(uint32
|
|
|
|
if (msgs++ < 3)
|
|
bb_info_msg("Sending discover...");
|
|
- return raw_bcast_from_client_config_ifindex(&packet);
|
|
+ return raw_bcast_from_client_config_ifindex(&packet, INADDR_ANY);
|
|
}
|
|
|
|
/* Broadcast a DHCP request message */
|
|
@@ -745,7 +745,7 @@ static NOINLINE int send_select(uint32_t
|
|
|
|
addr.s_addr = requested;
|
|
bb_info_msg("Sending select for %s...", inet_ntoa(addr));
|
|
- return raw_bcast_from_client_config_ifindex(&packet);
|
|
+ return raw_bcast_from_client_config_ifindex(&packet, INADDR_ANY);
|
|
}
|
|
|
|
/* Unicast or broadcast a DHCP renew message */
|
|
@@ -813,7 +813,7 @@ static NOINLINE int send_decline(/*uint3
|
|
udhcp_add_simple_option(&packet, DHCP_SERVER_ID, server);
|
|
|
|
bb_info_msg("Sending decline...");
|
|
- return raw_bcast_from_client_config_ifindex(&packet);
|
|
+ return raw_bcast_from_client_config_ifindex(&packet, INADDR_ANY);
|
|
}
|
|
#endif
|
|
|