nanog mailing list archives

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


From: Ingo Flaschberger <if () xip at>
Date: Thu, 17 Jun 2010 04:10:07 +0200 (CEST)

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



Current thread: