Comment 10 for bug 1741279

Marking Incomplete since we could not determine the cause of the issue after another hour-long triage session. (I still believe it has to do with the PXE request, but that has not been proven nor disproven.)

Workaround was to combine the subnets in MAAS into a single fabric on a single VLAN, so that the PXE request could not have any possible reason to assume the machine's interface moved. This workaround is required because of the not-fully-supported nature of the configuration (MAAS supports full DHCP relay, but in this situation only the PXE request was being forwarded to MAAS.)