title: GRPC "Error: 12 UNIMPLEMENTED: RPC method not implemented" even if service exists, in nodejs-apps behind docker network
body: <p>two node apps interacting with eachother, using grpc to talk to eachother, unpredictably stop communicating and erroring with above line. 'Error: 12 UNIMPLEMENTED: RPC method not implemented /servicename/methodname' as one of them restarts.</p>
  <p>A little help in understangind this issue from anyone who has seen such situation would be of great help.</p>
  <p>Thanks</p>