grp.update function

[gtsamis]

grp.update sends telegrams to KNX/IP, but not to KNX/TP. Make sure that you don't have any loops with multiple IP devices having access to the same TP line. You can also add filter rule to this group address.

  RTFM!!!! The manual is so clear that has the TP bus with bold.... but someone ignores it 

Thank you for pointing! Filtering dummy addresses will do the job!