Comment 7 for bug 1899487

Frode, can you explain to me the OpenStack operator path here. I'm not familiar with how these adjustments are practically made.

You mention "a operator to reduce the MTU available to instances" and "To maximize performance these clouds have configured their instances to use the maximum available MTU without leaving any headroom" but then also say that the MTU controls in OpenStack have been removed?

I'd like to understand where the knobs a cloud operator have available to them and then look at how to identify the "source of truth". So far I understand one is coming from the cloud itself, but I'm not sure how, another potential source of truth is a DHCP value provided to the instance. I assume that DHCP knob is in the DHCP server config and not done through a more centralized OpenStack knob that assures common behavior among DHCP and non-DHCP instances?