I found what seems to be an incompatiblity when GRUB/UEFI bootp is used with PXE active: you cannot reuse the same IP address. I.e. you cannot DHCP twice - once by UEFI/PXE and the 2nd time by GRUB/bootp The 2nd attempt will fail.
Eg., UEFI/PXE has received address 172.31.0.202. If I try to reuse the same IP address (either manually by net_add_addr or via net_bootp) I get the error message "timeout cannot resolve hardware address". If I use a different IP address it works. Hence it seems that with the native PXE stack active you cannot reuse the same IP for GRUB IP stack and UEFI/PXE. Is there a command that allows me to shutdown the PXE stack from the grub shell? Then I might be able to try net_bootp again. 2012/4/26 Vladimir 'φ-coder/phcoder' Serbinenko <phco...@gmail.com>: > On 25.04.2012 22:20, Richard Chan wrote: >> Hi Vladimir and list >> >> "The information from EFI network is used only if efinet is embed in >> grub.efi. Otherwise you have to call net_bootp manually" >> >> 1. How do you "embed" efinet.mod into the image so that >> grub_efi_net_config is called? >> I presume you mean somthing different from preload of module? > No, just preload >> ./grub-core/kern/efi/init.c: if (!*device && grub_efi_net_config) >> >> ./grub-core/net/drivers/efi/efinet.c: grub_efi_net_config = >> grub_efi_net_config_real; >> >> The latter function populates the NIC structure from PXE, but in my case, it >> is >> not being called. > Network config is started only if root is on network. Otherwise network > config is considered unnecessary and skipped. >> >> 2. For net_bootp, I can see the BOOTP request/reply but GRUB will >> timeout setting the IP address. It is as if it doesn't see the BOOTP >> reply. > Do you have full dumps? It's possible GRUB rejects them for some field > mismatch (not all bootp servers are good). > > > -- > Regards > Vladimir 'φ-coder/phcoder' Serbinenko > > > > _______________________________________________ > Grub-devel mailing list > Grub-devel@gnu.org > https://lists.gnu.org/mailman/listinfo/grub-devel > _______________________________________________ Grub-devel mailing list Grub-devel@gnu.org https://lists.gnu.org/mailman/listinfo/grub-devel
