This series adds support for custom DHCP options in passt, enabling network boot (PXE/UEFI HTTP Boot) and arbitrary DHCP option injection. Two new command-line flags are introduced: --dhcp-boot URL Sets the boot file URL (DHCP option 67 and the legacy boot file field) --dhcp-opt CODE,VALUE Sets any DHCP option by numeric code, with type-aware parsing per RFC 2132 The DHCP reply path is extended with option overload support (RFC 2132 option 52), allowing options to overflow into the file and sname fields when the standard options area is full. RFC 3396 option splitting for concatenation-requiring options has also been introduce as a separate patch. Anshu Kumari (6): dhcp: Refactor fill_one() to operate on a generic buffer dhcp: Add option configuration tracking with enum opt_conf dhcp: Add --dhcp-opt with option table and value parser dhcp: Add --dhcp-boot command-line option dhcp: Add option overload dhcp: Add RFC 3396 option splitting for concatenation-requiring options conf.c | 30 ++- dhcp.c | 612 +++++++++++++++++++++++++++++++++++++++++++++++++------- dhcp.h | 2 + passt.1 | 48 +++++ 4 files changed, 624 insertions(+), 68 deletions(-) -- 2.55.0