[Bug 1297487] Re: MTU not honored in virtio vnet

[Pierre Schweitzer]

Also affected by this bug with Ubuntu 12.04LTS kvm.
A tracepath in a VM with virtio network card ends with: Resume: pmtu 65535.
While with pcnet or rtl8139 it properly ends with: Resume: pmtu 1500

This is pretty blocking given some servers are failing to communicate
because of the wrong MTU (I've the case with a mail server).

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Title:
  MTU not honored in virtio vnet

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