Thanks works fine !
Though, i didn't want to disable ip helper so i disabled tcp/ip v6 on my internet connection and it seems to work just as fine. Played 2 or 3 games with tcp/ip v6 disabled and i got no "Attempting to reconnect", before that i always had a couple per game.
Anyone who wants to try disabling tcp/ip v6 and doesn't know how ->
Control Panel/Network and Sharing Center/Change adapter settings (on the left side)/
right-click on your internet connection/ properties/ uncheck tcp/ipv6
Sorry for my bad english (at least i suppose it's bad, i'm french).