Hi,
First of all thanks for the quick response.
The "remote control server" window does not show any particular message : only "HH:MM : Server started" while the app loops, as described in my first message.
However, I tried at home and it works flawlessly on my personal network so I'm starting to point fingers at work's routers !
I have a DHCP server at home though so everything works as it should in the 192.168.x.x range. But no DHCP at work to avoid messing up our network configs, must of the equipment is set up manually in the 196.254.x.x range and everything added just defaults to zeroconf.
I'm busy busy those days but when I'll have some time I'll go investigate on a solution and will post my findings here.