Ubuntu
grub2 package

  1. Xenial (16.04)
  2. Bug #1437024
  3. Comment #12

Comment 12 for bug 1437024

Revision history for this message
Rod Smith (rodsmith) wrote :

The server's firmware is set up to use IPv4; IPv6 is explicitly disabled. Thus, if there's an IPv6 component to this bug, it's something in the MAAS software stack that's causing GRUB to attempt to use IPv6 inappropriately. Note that the failure occurs in GRUB; the server is able to pull down the GRUB binary from the TFTP server, but GRUB hangs at a "grub>" prompt.

Given that the failure occurs only on a secondary NIC, my suspicion is that GRUB is trying to use a network interface other than the one from which it was itself loaded. Perhaps when this fails it tries IPv6 over the same interface...?