** Description changed:
+ [Impact]
+ Trying to PXE boot (with UEFI) over IPv6 with grub. This is especially
relevant for MAAS users in IPv6 setups.
+
+ [Test cases]
+ 0) Setup PXE boot infrastructure
(https://wiki.ubuntu.com/UEFI/SecureBoot-PXE-IPv6, also
https://github.com/openSUSE/kiwi/wiki/Setup-PXE-boot-with-EFI-Using-GRUB2
contains relevant information)
+ 1) Attempt to PXE boot (with UEFI) over IPv6 a system.
+
+ Testers can use grubnetx64.efi.signed from
+ http://archive.ubuntu.com/ubuntu/dists/xenial-
+ proposed/main/uefi/grub2-amd64/current/ once the package is available in
+ proposed.
+
+
+ [Regression potential]
+ Possible regressions include any issues in routing IPv4 or IPv6 and/or
retrieving files over PXE/tftp via grub. Ping is a good way to validate that
routing is being done correctly, so is actually booting using the build
grubnetx64.efi.
+
+ ---
+
Testing using the pre-built grubnetx64.efi, I am not able to use the
tftp client support within grub2 to load configs (/kernels/initrds) over
the network. This works fine if using IPv4.
grubnetx64.efi is being loaded over the network (via shim no less), so
the firmware's network stack is definitely up and working. But when
grub tries to load grub.cfg via the default path, it fails with:
- error: couldn't send network packet.
+ error: couldn't send network packet.
This message is repeated, approximately once every three seconds. It
looks to be an infinite loop; at least, the message is repeated more
than 100 times. But sometimes, when I've not been paying close
attention to the boot, I get a grub shell instead. In that case, the
grub shell shows:
grub> echo $root
tftp,0.5.0.24
grub> set
[...]
net_default_server=
net_efinet2_boot_file=8:23f::2]/bootx64.efi
net_efinet2_ip=0.0.0.0
net_efinet2_mac=02:3f:00:00:00:00
[...]
prefix=(tftp,0.5.0.24)/grub
pxe_default_server=
root=tftp,0.5.0.24
[...]
grub>
The actual server IP is 2001:1938:23f::2.
I've booted a locally-generated (self-signed) grubnetx64.efi with grub-
bootstrap.cfg modified to call 'set' first, and I get identical output
for all of the network-related variables.
** Changed in: grub2 (Ubuntu Xenial)
Status: Triaged => In Progress
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https://bugs.launchpad.net/bugs/1229458
Title:
grubnetx64.efi tftp client does not work over ipv6
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