adhoc mode doesn't work

Hi all,

i'm in trouble with two laptops equipped with a wireless NIC (a broadcom
and a Intel).

I tried to configure adhoc mode, but they won't communicate.

On both machines, i disabled network manager this way:

/etc/dbus-1/event.d/25NetworkManager stop

then, on the laptop "A" i gave:

iwconfig eth1 essid test mode ad-hoc channel 8 key off
ifconfig eth1 10.0.0.1 netmask 255.255.255.0 up

On the laptop "B":

iwconfig eth1 essid test mode ad-hoc channel 8 key off
ifconfig eth1 10.0.0.2 netmask 255.255.255.0 up

so if i try to make traffic, i can't see a packet!

If from B i try to ping A, i don't get any response
Using tcpdump on A i can't see the incoming ping from B, but sometimes i
can see ARP requests from it (that reamin without a response)...
Same thing if i ping B from A.

I tried to set up encryption or using smaller subnets, but nothing changed.

I'm not a wireless wizard, ok, but i really can't understand what i'm
missing...

Any clue?

Are you setting up route/default route? Also, you might want to dump
ifconfig in favor of 'ip', from iproute2.

http://linux-net.osdl.org/index.php/Iproute2

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