The MTU of an Interface is Being Rolled Back to 1500 After a VM Server Reboot (Doc ID 2148491.1)

Last updated on JUNE 30, 2016

Applies to:

Oracle VM - Version 3.0.1 to 3.4.1 [Release OVM30 to OVM34]
Linux x86-64

Symptoms

On Oracle VM, all 3.X.X releases prior 3.4.1, when altering the size of the MTU for either a bond or a network interface on an Oracle VM Server (Hypervisor), e.g. to enable Jumbo Frames, the change is applied, but he MTU value gets rolled back to 1500 for some or all adapters/bonds after next reboot.

Cause

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