Subject: Re: Broadcast and multi-homed routing condition in TCP/IP stack.
To: Charles M. Hannum <firstname.lastname@example.org>
From: Andrew Brown <email@example.com>
Date: 03/07/2001 15:20:49
>> >> Some stacks will allow TCP connection to be established to the broadcast
>> >> address configured on any given interface.
>> >It's true that this doesn't catch packets that are sent by Ethernet
>> >unicast to the IP broadcast address. I'm not sure what the prevailing
>> >opinion on this is, but we should probably filter such packets.
>> i'm of the opinion that something somewhere ought to be checking that
>> the layer two address matches the layer three address in type, ie
>> unicast, broadcast, multicast, (or anycast).
>> this however, would probably be decidedly non-trivial, and rather
>Not to mention it would actually break DHCP.
do you mean with the initial packet that the client sends? or
something else? i was only postulating checking the dst addresses.
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