bhyve/e1000: Assertion failed: (dtype == ntype), function e82545_transmit with win10 guest

[Peter Grehan]

This appears to be an MP issue: if the number of vCPUs in the win10 
guest is set to 1, I'm unable to trigger this. However, it happens 
almost immediately with vCPUs > 1.

Even with a single vCPU there looks to be some false triggering of the 
transmit process: still debugging that.

later,

Peter.