help me fix my htc 6800 to computer then to xbox 360 connection. DNS failed?

[minutemaid420]

i am using my cellular connectin, bridged between the xbox and computer. and i get dns failed erroe come W 0000-000B X 0000-F009( and F0021) Y 0000-00C0 Z 8015-1904. and my cell connection boots me sometimes. say remote party ended session. any ideas are welcome