Public bug reported:
[Impact]
While the Grub2 patches described in LP#1508893 reduce the TFTP time-out, HP
ProLiant m400 servers when booting via UEFI, may still experience TFTP timeouts.
[Test Case]
PXE boot a UEFI-based system (d-i or MAAS) and monitor the time it takes for
GRUB to download the kernel/initrd. tcpdump will show TFTP timeouts and packet
retries, and it can take on the order of minutes to begin running the kernel.
[Regression Risk]
The fix is restricted to UEFI-based systems.
** Affects: grub2 (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1521612
Title:
Continued TFTP timeouts when PXE booting via grub
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