Hello! > Is there a reason that the target hardware address isn't the target > hardware address?
It is bound only to the fact that linux uses protocol address of the machine, which responds. It would be highly confusing (more than confusing :-)), if we used our protocol address and hardware address of requestor. But if you use zero protocol address as source, you really can use any hw address. > The dhcp clients I examined, and the implementation of the arpcheck > that I use will compare the target hardware field of the arp-reply and > match it against its own mac, to verify the reply. And this fails with > the current implementation in the kernel. 1. Do not do this. Mainly, because you already know that this does not work with linux. :-) Logically, target hw address in arp reply is just a nonsensial redundancy, it should not be checked and even looked at. 2. What's about your suggestion, I thought about this and I am going to agree. Arguments, which convinced me are: - arping still works. - any piece of reasonable software should work. - if Windows understands DaD (is it really true? I cannot believe) and it is unhappy about our responce and does not block use of duplicate address only due to this, we _must_ accomodate ASAP. - if we do,we have to use 0 protocol address, no choice. Alexey - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/