FAQ

I can't receive Group Address messages

When trying to read a Group Address from bus, with pknyx-group.py utility, you may get nothing.

First, check that the used Group Address is correct, and there is a device configured to respond to a read request (use ETS for that).

Second, depending on your network topology, you may have a dummy switch which forbids multicast frame beeing sent on all ports. I got this nasty behaviour with my Netgear GS116E. By default, there is a so-called intelligent option which only send multicast frames on ports where a machine joined the corresponding multicast IP. But this does not work! Setting this option to off fixed the issue.