Hi, Here''s a patch against XenLinux from 2.0.7 that allows you to use baby giant frames over vif''s. I''ve only done minimal testing on it but it should work with MTU''s of up to 3000. The 3000 limit was arbitrarily chosen due to 4k pagesize and because I''m not sufficiently knowledgeable about Xen''s architecture to work out exactly how much headroom is needed. For my requirements (layer 2 tunnelling) I''m never going to need an MTU of more than 1600 so I''ve left this as an exercise for the reader. :-) Note on bridging: there seems to be a misconception by some that the linux bridging code doesn''t support jumbo frames. For the record this is not true, but it won''t allow you to configure an MTU greater than the smallest MTU on a bridge port. (If there are no bridge ports the maximum MTU is 1500.) The trick is to configure the jumbo MTU on each member of the bridge first before configuring it on the bridge itself. Regards, Ben. _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel