Hi,

My cloud is using IPv4 addressing to access metadata only, all regular/other traffic is all IPv6. I'm facing a problem now where certain (!) downloads are corrupted, eg. making it impossible to yum update my kernel (this is a CentOS 7 instance). The instance is receiving a MTU of 1454 per DHCPv4, all other interfaces involved are set to 1500.

Setup:
- controller node running neutron and openvswitch
- compute node running the instances and neutron-openvswitch-agent

The cloud is configured with GRE tunnels and uses ML2 (openvswitch).

How to aproach this?

Regards,
Harm

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