Source MAC address per IP packet
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Posted by glen herrmannsfeldt on August 11, 2008, 6:09 pm
Please log in for more thread options On Jun 15, 3:02 pm, albrechtuhlm...@gmx.net wrote: As far as I know, in some the whole packet is generated in memory (or in NIC memory) and then sent, in others the source address is stuffed in as it is transmitted. You might look at older ones from the days when hardware was more expensive. (Eight bit ISA days.) You should be working at the hardware level, though, not while running a networking OS. (DOS makes it easy, especially if you never return.) Otherwise, just write the source address register before sending each packet. (Again, working directly with the hardware registers, not through a networking OS. You want the data sheet for the individual controller chip, not the whole card. -- glen | ||||||||||||||||||||||||||||
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Posted by Burkhard Ott on August 12, 2008, 8:31 am
Please log in for more thread options Am Sun, 10 Aug 2008 10:51:49 -0700 schrieb hat-trick: > On Jun 15, 3:02 pm, albrechtuhlm...@gmx.net wrote:
>> for every IP packet that I send. Is this possible at all? I know that
>> the MAC address >> can be changed in software but per IP frame? On the other hand, every >> layer 2 >> controllers I got hands on allow you to program the MAC address but it >> is then >> automatically filled in for every packet. >> >> Also, how would the programming side look like? I presume I must use >> RAW sockets >> but in which field would I set the source MAC address? >> What about /usr/src/linux/if_ether.h ? (struct ethhdr) You can set the MAC address to what ever you want. cheers | ||||||||||||||||||||||||||||
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> MAC address individually for every IP packet that I send.
> Is this possible at all? I know that the MAC address
> can be changed in software but per IP frame?