Sending ARP request to unicast MAC instead of broadcast MAC address?

Ingo Flaschberger if at xip.at
Wed Jun 16 21:10:07 CDT 2010


Dear Chris,

> OK, this sounds Really Wacky (or, Really Hacky if you're into puns) but there's a reason for it, I swear...
>
> Will typical OSS UNIX kernels (Linux, BSD, MacOS X, etc) reply to a crafted ARP request that, instead of having FF:FF:FF:FF:FF:FF as its destination MAC address, is instead sent to the already-known unicast MAC address of the host?
Try or read kernel source.

> Next, what would be your utility of choice for crafting such a packet? Or is this something one would need to code up by hand in a lower-level language?

http://www.perihel.at/sec/mz/
should be able todo this.

Kind regards,
 	Ingo Flaschberger





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