carp and reserved channles

[Donatas]

hello,

is it possible to use carp  to create reserve(and/or load-balanced) ethernet channel between two machines?

basic idea looks like:

machine-1 (em0)------------eth------------(em0)machine-2
machine-1 (em1)----eth(reserved)------(em1)machine-2

as far as i know carp cannot allow to share the same IP's on one machine because of no possibility to set same IP's on physical ethernet interfaces...

in IP level this problem can be easily solved with certain routing daemons, but i must do it on layer-2.

of course i could write a script for monitorig interface activity status, on it's failure automaticaly rise-up reserve adapter, but maybe someone has allready done this?

any other suggestions are welcome...