Openvswitch: large packets are getting dropped

Solution Verified - Updated -

Issue

  • TCP connections from external hosts hang due to dropped packets - appears to be an MTU issue (with incoming large packets being dropped) except that setting a low MTU (1200) on both ends of the connection doesn't fix the problem. Outbound large packets work fine. Connections from the network controller work fine.

Environment

  • Red Hat Enterprise Linux 7
    • kernel earlier than 3.10.0-327.el7
  • Openvswitch

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