[bug #43396] TFTP boot: error: time out opening '/grub/i386-pc/normal.mod'

[Rink Springer]

Follow-up Comment #5, bug #43396 (project grub):

@Andrei, the DHCP server is on another subnet. DHCP relaying is provided by a
Cisco 2960G, which cannot perform IPv4 routing (nor does it need to, in this
case). The DHCP server is isc-dhcpd-server 4.2.4.

I've added a capture of what the DHCP server receives and responds
(dhcp.pcap). However, in my opinion, GRUB shouldn't attempt to use the gateway
for hosts which are on its own subnet.

As a workaround, I've tried to add 10.13.13.2 as default gateway, but this
makes no difference. I've hacked net.c to dump the routing table (by just
calling grub_cmd_listroutes() prior to grub_net_route_address()'s return) and
this yields:

pxe:local 10.13.13.0/24 pxe
pxe 10.13.13.254/32 pxe
pxe:gw 10.13.13.2/32 gw 10.13.13.254

The final line is what worries me: why is it forcing to use the  gateway for
something that it knows is on its local network?

@Daniel, are you using DHCP relay as well (it seems you are) - otherwise, I
may have hijacked your bug report, apologies if this is the case.

(file #34033)
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Additional Item Attachment:

File name: dhcp.pcap                      Size:1 KB


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