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: b164561b4f42223b6d37e00f613adc32c22e5377c0fb6a6615e101c625d9b9cb 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 of: a92ed9943c6569a999b9b437e7ca07ccac7d30a4df1a18cdd68b406e5d45013c 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 separately. 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. https://bugs.launchpad.net/bugs/1437353 Title: UEFI network boot hangs at grub for adapter 82599ES 10-Gigabit SFI/SFP+ To manage notifications about this bug go to: https://bugs.launchpad.net/maas/+bug/1437353/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
