My connection is being weird, showing MTU = 0

You need to look at the device from your isp and see EXACTLY what it is , brand and model #....

Using 1480 gets me 100% loss. I'm using wireless, I can't use a wired connection. I didn't reach my ISP because everything works fine except my Xbox

My router is a Dlink DIR-809, my modem I don't really know, my carrier lends me it. I tried power cycling every single thing. Here are the ping test results:

Resposta de 173.222.159.244: bytes=1364 tempo=33ms TTL=54

Resposta de 173.222.159.244: bytes=1364 tempo=35ms TTL=54

Resposta de 173.222.159.244: bytes=1364 tempo=34ms TTL=54

Resposta de 173.222.159.244: bytes=1364 tempo=33ms TTL=54

Estatísticas do Ping para 173.222.159.244:

Pacotes: Enviados = 4, Recebidos = 4, Perdidos = 0 (0% de

perda),

Aproximar um número redondo de vezes em milissegundos:

Mínimo = 33ms, Máximo = 35ms, Média = 33ms

Hi,

Could you post up the make and model of your router and your modem as well (if this is not a single unit).

Have you tried to power cycle your networking equipment (have it powered off for a couple of minutes)?

Let's try with a basic IP connectivity test (ping) and add a specific packet size, to determine if packet needs to be fragmented (when DF set).

Connect your computer with an Ethernet cable directly to the ADSL modem.

Windows: Open up a command prompt (press "Windowskey + R", then type "cmd" and press Enter).

 In the black window that opens, type: ping www.xbox.com -f -l 1364

Mac: Select spotlight and type Terminal. in the Terminal window, type: ping -D -s 1364 www.xbox.com

Let me know if you like me to help you tweak and troubleshoot your D-Link router, or if wish to continue with your current setup.