it should work both ways, or at least it used to long ago as you say; please check whether you're using a dedicated MIDI Control ins/outs, which then must be the sinks/sources on qmidinet...
one other reason for it not working relates to the network interface and/or firewall and whatnot: make sure the machine you have qmidinet running is allowed to receive udp/multicast packets through the designated net interface/card... it might be allowed to send as you already know, but receiving is another matter, be advised :)
it should work both ways, or at least it used to long ago as you say; please check whether you're using a dedicated MIDI Control ins/outs, which then must be the sinks/sources on qmidinet...
one other reason for it not working relates to the network interface and/or firewall and whatnot: make sure the machine you have qmidinet running is allowed to receive udp/multicast packets through the designated net interface/card... it might be allowed to send as you already know, but receiving is another matter, be advised :)
cheers