用了VLAN就不能用LIVE账号联机了,求解

ksut

前几天用vlan联的。今天弄到了cd-key想上live去结果一直上不去了
貌是说是vlan把live的网络地址变了，可是我不知道怎么解决就达人帮帮忙。
系统给我说的这段话can't connect to LIVE .A.connection to the
network is not available.If you using a pppconnection,
make sure you establish that connection before starting the game
大家救救小弟吧