I have positively verified that an affected system (which has a 82599ES
10-Gigabit SFI/SFP+) exhibits the ARP storm behavior when booting with
MAAS using the grubnetx64.efi binary in xenial(-updates), leading to
stopping in the grub prompt; and with the grubnetx64.efi binary in
xenial-proposed no ARP storm is noticeable, and the system boots
normally as expected.

The bad binaries are any 2.02~beta2-36ubuntu3.17 and prior; the binary
installed by MAAS or I would most commonly expect to see on an affected
setup comes from xenial-updates (grub2 2.02~beta2-36ubuntu3.17) has a
sha256sum of:


And the valid binary from xenial-proposed (until this SRU is released to 
xenial-updates), comes from grub2 2.02~beta2-36ubuntu3.18 and has a sha256sum 


If running 'sha256sum 
/var/lib/maas/boot-resources/current/bootloader/uefi/amd64/grubx64.efi' (or 
using the path appropriate to non-MAAS netboot setups) yields the same value as 
above (a92ed9943c6569a999b9b437e7ca07ccac7d30a4df1a18cdd68b406e5d45013c), then 
you are running the patched version of grub2. If you are still noticing issues, 
then you would be seeing a different bug, one that should be reported 

Marking this verification-done.

** Tags removed: verification-needed-xenial
** Tags added: verification-done-xenial

You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.

  UEFI network boot hangs at grub for adapter 82599ES 10-Gigabit

To manage notifications about this bug go to:

ubuntu-bugs mailing list

Reply via email to