package/utils/busybox/patches/204-udhcpc_src_ip_rebind.patch

   1 --- a/networking/udhcp/dhcpc.c
   2 +++ b/networking/udhcp/dhcpc.c
   3 @@ -673,10 +673,10 @@ static void add_client_options(struct dh
   4   * client reverts to using the IP broadcast address.
   5   */
   6
   7 -static int raw_bcast_from_client_config_ifindex(struct dhcp_packet *packet)
   8 +static int raw_bcast_from_client_config_ifindex(struct dhcp_packet *packet, uint32_t src_nip)
   9  {
  10         return udhcp_send_raw_packet(packet,
  11 -               /*src*/ INADDR_ANY, CLIENT_PORT,
  12 +               /*src*/ src_nip, CLIENT_PORT,
  13                 /*dst*/ INADDR_BROADCAST, SERVER_PORT, MAC_BCAST_ADDR,
  14                 client_config.ifindex);
  15  }
  16 @@ -687,7 +687,7 @@ static int bcast_or_ucast(struct dhcp_pa
  17                 return udhcp_send_kernel_packet(packet,
  18                         ciaddr, CLIENT_PORT,
  19                         server, SERVER_PORT);
  20 -       return raw_bcast_from_client_config_ifindex(packet);
  21 +       return raw_bcast_from_client_config_ifindex(packet, ciaddr);
  22  }
  23
  24  /* Broadcast a DHCP discover packet to the network, with an optionally requested IP */
  25 @@ -715,7 +715,7 @@ static NOINLINE int send_discover(uint32
  26
  27         if (msgs++ < 3)
  28         bb_info_msg("Sending discover...");
  29 -       return raw_bcast_from_client_config_ifindex(&packet);
  30 +       return raw_bcast_from_client_config_ifindex(&packet, INADDR_ANY);
  31  }
  32
  33  /* Broadcast a DHCP request message */
  34 @@ -759,7 +759,7 @@ static NOINLINE int send_select(uint32_t
  35
  36         addr.s_addr = requested;
  37         bb_info_msg("Sending select for %s...", inet_ntoa(addr));
  38 -       return raw_bcast_from_client_config_ifindex(&packet);
  39 +       return raw_bcast_from_client_config_ifindex(&packet, INADDR_ANY);
  40  }
  41
  42  /* Unicast or broadcast a DHCP renew message */
  43 @@ -827,7 +827,7 @@ static NOINLINE int send_decline(/*uint3
  44         udhcp_add_simple_option(&packet, DHCP_SERVER_ID, server);
  45
  46         bb_info_msg("Sending decline...");
  47 -       return raw_bcast_from_client_config_ifindex(&packet);
  48 +       return raw_bcast_from_client_config_ifindex(&packet, INADDR_ANY);
  49  }
  50  #endif
  51