Error: MAC Invalid in CI

[achingbrain]

There are intermittent CI failures with this error. What can cause it?

Example: https://travis-ci.com/ipfs/interop/jobs/286758788

  1) pubsub
       publish from JS, subscribe on Go
         "before all" hook: connect for "should exchange ascii data":
     HTTPError: 
    Error: MAC Invalid: f39fb68d3b3b8804823a153d1173f29f160588d02ff8715f0a58edc437a1fe4b != 3954fc7fb2c158dce5a18a26b5042fc502dcd480ad04da8c428a8da276aed2b2
        at C:/Users/travis/build/ipfs/interop/node_modules/ipfs/node_modules/libp2p-secio/src/etm.js:33:15
      at errorHandler (node_modules\ipfs-http-client\src\lib\error-handler.js:41:17)
      at process._tickCallback (internal/process/next_tick.js:68:7)

[jacobheun]

We've seen this intermittently in the past. This is occurring when we are reading in messages, so I am thinking this may be do to a remote reset on the stream while we're reading. Do you know if MDNS is enabled for the tests that are failing intermittently? Since this is in the before all hook, it could be a result of the tcp simultaneous dial issue in Go. I'm curious if both peers are attempting to dial one another, or if it's just a one way connection.

[achingbrain]

The tests pass the test: true flag to ipfsd-ctl which means it uses the test profile so MDNS shouldn't be enabled, no.

https://github.com/ipfs/js-ipfs/blob/master/src/core/components/config.js#L75-L89