Since updating the nbi to 10.12.x I have been unable to NetBoot from different subsets. I'm also only able to NetBoot to up to around 7 devices at a time to Macs on the same subnet.
If I restore the 10.11 NBI it works fine.
I've tried multiple images using autodmg and creating a minimal base image. I've also tried tweaking the settings in autocaspernbi, but I keep getting the same result.
Is anyone else having similar issues with netbooting across subjects with 10.12.x?