I found a small bug/issue with the latest (21) build:

I changed my network settings for 2 laptop to use ICS (internet connection sharing) [ethernet link between the 2 and 1 of them only on wireless - this is to see if latency is even smaller that way when KMing] and the slave computer was showing as a black screen on the master one (and the master not at all on the slave) until I went into advanced settings and set the master (the one on the computer with the internet connection) to use the private IP from ICS instead of system default - I think Mojo should be smart enough to guess that it should check both sides if I have multiple network interfaces - some explanation of the colors would help too (what does black and yellow mean exactly ? just seems that blue = good and the others are not so good but what exactly?)