Hi All, Today is a great day. My hotmail login error is fixed. Following Peter's advice, I used e1000 card, don't change any MTU , the hotmail login error went away! It is MTU issue, for VLAN tag traffice going through the bridge, the NICs in the bridge need support VLAN tag, e100/e1000 card can. Thanks to Peter, Stephen Hemminger, and All ! So far I know Intel e100/e1000 card can handle VLAN tag traffic, Have other brand/model Card support VLAN tag( or with patch) ? Any experience? I saw the following from Ben's VLAN site: I hear that the 2.2/2.4 kernel patches have worked with these (and other, I'm sure) systems: * Cisco: {Catalyst: 6509}, 3Com: {Corebuilder, Netbuilder II, SuperStack II switch 630}, Alpine: {3804(SMMi,F32Ti)} Extreme Ntwks {Summit 48, 48i, 5i} Foundry: {ServerIronXL, FastIron} * Alteon ACENic Gigabit, 3Com 3c509, realtek RTL8029(AS), RTL8139, DEC DC21140 (tulip), DFE-570TX quad-21143, Intel PRO/1000 with Intel's driver As my understanding, the above NICs can support VLAN tag, just same as the e100/e1000 card, the above also need some patch for VLAN tag, e.g. 3Com 3c509, RTL8139 can support ? also need a patch? In Ben's VLAN page, I only found patches for some cards, others card need not a patch for VLAN tag? Any comments, experience? Thanks! Again thanks to Peter, ben, Stephen Hemminger, and All! Best regards, Kingz -------------- next part -------------- An HTML attachment was scrubbed... URL: http://www.lanforge.com/pipermail/vlan/attachments/20041207/1068adf4/attachment.htm