ipxe http download hangs

[benbp]

Just to chime in, I'm seeing what seems to be the same or a similar issue. PXE booting around 10-40 nodes, ~100mb of images downloaded by each node. When it does manifest it's usually only 2-4 nodes that fail, and if rebooted they PXE boot like normal. It's peculiar but this is only reproducible in a smaller subset of our environments, so I'm wondering whether on more congested networks this problem could be more prevalent?