Comments
Disable debug. Have all nodes send EBs
Set desynch threshold assuming a clock drift of max 40 PPM and a guard time of 1ms. Use a slotframe size of 23 and EB period of 4s.
Use IN_COOJA by default for tsch-testbed
Print duty cycle as permil, not percent
Fix comment
Cleanup send_packet
Merge branch 'rich-2.7' into HEAD