Re: Grub Not Routing TFTP Appropriately

[Travis DePrato]

grub2-efi-2.02-0.29, taken from RHEL 7.2 installation media rpm.

On Mon, May 15, 2017 at 11:17 PM Andrei Borzenkov <address@hidden>
wrote:

> 15.05.2017 22:37, Travis DePrato пишет:
> > Hello, all!
> >
> > I've been attempting to get UEFI Network booting working for a while now
> > (compounded by many unrelated issues) but I've run into one that I
> believe
> > to be definitely the fault of GRUB (perhaps this should be a bug report?
> > I'm not sure).
> >
> > I've been using various grubx64.efi/bootx64.efi/core.efi images. Each
> > machine seems to have the same issue: the uefi network rom loads the grub
> > efi image appropriately, then when it tries to load grub.cfg (for
> > grubx64.efi) or the other components (starting with normal.mod), it
> routes
> > the packets incorrectly.
> >
> > For the initial .efi image, it communicates directly with the TFTP server
> > on the ethernet layer (i.e. packets are routed directly to the mac
> address
> > of the TFTP server) whereas when grub continues trying to load
> components,
> > it tries to route through the router/gateway (it first arp's for the IP
> of
> > the gateway sends packets to the ethernet address of the gateway), and
> > those packets are summarily dropped (I've confirmed that the TFTP server
> > doesn't get them via wireshark).
> >
> > Ideas?
> >
>
> What is your grub version?
>
-- 
Travis DePrato (he/him/his)
University of Michigan, Ann Arbor
Computer Science & Engineering
Mathematics (Discrete and Algorithmic Methods)
Computer Consultant at EECS DCO