Official comment

Hello Henrik
Once the microserver is programmed, it enters a state known as flush mode or quiet mode. In quiet mode, all network interaction is suspended, and the microserver waits for the host processor to complete the ShortStack initialization sequence.
Please see the Shortstack user's guide for mode details: http://downloads.echelon.com/support/documentation/manuals/devtools/078-0365-01B_ShortStack_Users_Guide.pdf
If you require further assistance, please open a free of charge support ticket at www.echelon.com/support
Karelle