These errors show up using the same setup described in DISPATCH-1124 and ENTMQIC-2064

A three-router linear network uses a wireless connection for the interrouter links.

Messages are injected into a router at one end of the chain and are forwarded to receivers on the other two routers.

• The receiver attached to the router in the middle may receive tens of millions of messages before getting an underflow.
• The receiver attached to the router at the far end of the chain may file as soon as 25 messages or as late as several thousand messages.
• Messages are text strings 1,443 bytes long

Some observations:

• Normal transfer frames have transport size of 0x5ec bytes.
• Messages that fail with underrun commonly have a size of 0x1aa bytes. It is not always 0x1aa but that number shows up in consecutive runs.