feat(pxe): TFTP option negotiation and PXE boot fixes - #3
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Implement RFC 2347 TFTP option negotiation (OACK) with support for blksize and tsize. This fixes UEFI PXE clients (e.g. Fujitsu Esprimo) that request blksize=1468 and refuse DATA without a preceding OACK. Also: - Bind TFTP transfer sockets to the interface IPv4 address instead of 0.0.0.0 to ensure replies originate from the expected server IP. - Force IPv4-only UDP sockets (udp4) for the TFTP control socket. - Add sanitizeTFTPName to strip trailing junk bytes from RRQ filenames. - Add prominent DHCP MAC logging line for easier client identification. - Update router-extras.toml with VLAN address, reservations and per-MAC PXE boot files for T410i, Fujitsu and the Lenovo test machine. Validated on BPI-R1 with ThinkPad T410i (legacy) and Fujitsu Esprimo (UEFI) PXE booting into the netboot.xyz menu.
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Implement RFC 2347 TFTP option negotiation (OACK) with support for blksize and tsize. This fixes UEFI PXE clients (e.g. Fujitsu Esprimo) that request blksize=1468 and refuse DATA without a preceding OACK.
Also:
Validated on BPI-R1 with ThinkPad T410i (legacy) and Fujitsu Esprimo (UEFI) PXE booting into the netboot.xyz menu.