I'm not using a bridge. And i have set the mtu on both tapX and ethX to 9000.
Having done a little packet sniffing from the hostmachine -> virtual machine I can see that packets of the correct (large) size are being sent. Whilst sniffing on the virtual machine I don't see any packets. This indicates to me that the network emulation drivers in KVM aren't setup correctly? I'm using the e1000 drivers. Anyone any thoughts? 2008/10/30 Javier Guerra <[EMAIL PROTECTED]>: > On Thu, Oct 30, 2008 at 4:41 AM, Matthew Faulkner > <[EMAIL PROTECTED]> wrote: >> I go no respone. So i started with a lower packet size and figured out >> below a size of 4054 packets were sent and recevied (without ip >> fragmentation), however, as soon as the packets were >= 4055 it >> stopped working. >> >> Is this a known problem? Have I set something up incorrectly? > > are you using a bridge? it has some problems with long packets. > > if you can, try without a bridge. if not, make sure that you set the > MTU of both ethX and tapX to 9000 before adding anything to the > bridge. i think the bridge itself has its own MTU that is set > according to the interfaces it gets; but i don't know if it can change > MTU when an interface changes. > > > -- > Javier > -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
