[PATCH 2.6] ipconfig accepts any DHCPACK

[Peter Buckingham <peter@xxxxxxxxxxxx>]

Hi David,

I was playing around with using ipconfig to initialise a bunch of 
systems and it turns out that the ipconfig code doesn't check to see 
whether the ACK is for it or another system. I've just added a simple 
check to compare the hardware address of the device to the one in the 
packet.
peter

Signed-off-by: Peter Buckingham <peter@xxxxxxxxxxxx>

--- linus-2.6/net/ipv4/ipconfig.c       2004-09-02 14:53:54.000000000 -0700
+++ local_linux/net/ipv4/ipconfig.c     2004-09-02 14:57:49.000000000 -0700
@@ -966,6 +966,12 @@ static int __init ic_bootp_recv(struct s
                                break;

                        case DHCPACK:
+                               for (i = 0; (dev->dev_addr[i] == b->hw_addr[i])
+                                               && (i < 16); i++);
+                               if (i < 16)
+                                       goto drop_unlock;
+
                                /* Yeah! */
                                break;