[ubuntu] Connection between Android and Ubuntu

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http://ubuntuforums.org – My laptop is connected to internet through a crossover cable (DHCP) and I want to share this connection with my HTC tattoo through wifi (my laptop has wifi, no need for router).Is this thing possible ? I installed dnsmasq and created a wireless connection from network manager, but my phone doesn't find this connection, why? Thanks (HowTos)