Yes I totally understand the diffenrece and I've worked a lot with IP packets (both UDP and TCP) over Linux.
But in my case I don't need the reliability, at this time my current sketch doesn't look at the actual result of the last packet, so it doesn't even try to resend in case it failed, it just goes to sleep as usual and waits 15min for the next time
And so far I thing I haven't lost any packets in several weeks.
But I want to use th functionality that Cooking Hacks is talking about, being able to send with no ACK in 6-10 seconds, this would probably double the battery life in my device. But they use a specific Libelium library they made for their devices
I would like to know if there's a way to send with no ACK using the normal library.
Thanks