Comment 1 for bug 1949120
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| Frode Nordahl (fnordahl) wrote Re: Missing PPMTUD for ICMP and UDP when there are dedicated gateways | #1 |
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Thank you for raising this issue, so just to confirm, OVN 20.03 already does send ICMP type 3 (Destination Unreachable) code 4 (Fragmentation needed and DF was set) [4] to instances in the cloud, informing the client of the gateway MTU when the `gateway_mtu` flag is set on the LRP.
So the issue you are describing would only come into play if there are machines connected directly to the provider network using a MTU > the OVN LR MTU and/or a external to openstack router has MTU > the OVN LR MTU on its L3 interface facing the provider network?
4: https:/