Node-to-node ARP traffic does not work on OpenShift SDN
Issue
- Traffic from pods or
tun0
interface of one node to pods andtun0
interface of a different node is dropped withDestination Host Unreachable
error. - VXLAN traffic is properly allowed
- Open vSwitch flows are correct
- Capturing traffic on destination interface shows correct ARP packets arriving but not being answered
Environment
- OpenShift Container Platform 3.x
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