Orabuntu-LXC by default sets interfaces on LXC containers on spoke LXC hosts to MTU 1420 so that they can traverse the GRE tunnel. This is so that even desktop users should get out-of-the box operability of multihost Orabuntu-LXC deployments. However, if Orabuntu-LXC is deployed on NICs that support MTU 9000 it will be necessary to simply change the required MTU settings in the container config files (to MTU 8920) to take advantage of the jumbo frames capability of the physical NIC providing communication across the physical LXC hosts. How to do this needs to be in the Orabuntu-LXC wiki.
Roadmap includes auto-sense code to test physical NIC and set to MTU 9000 if supported.
Orabuntu-LXC by default sets interfaces on LXC containers on spoke LXC hosts to MTU 1420 so that they can traverse the GRE tunnel. This is so that even desktop users should get out-of-the box operability of multihost Orabuntu-LXC deployments. However, if Orabuntu-LXC is deployed on NICs that support MTU 9000 it will be necessary to simply change the required MTU settings in the container config files (to MTU 8920) to take advantage of the jumbo frames capability of the physical NIC providing communication across the physical LXC hosts. How to do this needs to be in the Orabuntu-LXC wiki. Roadmap includes auto-sense code to test physical NIC and set to MTU 9000 if supported.