Re: Grub Not Routing TFTP Appropriately

[Andrei Borzenkov]

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?