[PATCH v2 0/2] dhcpv6: Add --dhcpv6-opt for custom DHCPv6 options

[Anshu Kumari <anskuma@redhat.com>]

This series adds a --dhcpv6-opt CODE,VALUE command-line option to
inject custom options into DHCPv6 replies, complementing the existing
--dhcp-opt support for DHCPv4.

The primary use case is UEFI HTTP Boot, which requires Vendor Class
(option 16) with the correct enterprise-number + length-prefixed wire
encoding per RFC 8415 Section 21.16, and Boot File URL (option 59).

Value formats are determined automatically from the option code via a
type table. Supported types include plain strings, IPv6
addresses (single and list), 8/16/32-bit integers, vendor class
(ENTERPRISE:DATA), and length-prefixed string lists.

Anshu Kumari (2):
  dhcpv6: Add --dhcpv6-opt with option type table and value parser
  dhcpv6: Inject custom options into DHCPv6 replies

 conf.c   |  60 ++++++++++++-
 dhcpv6.c | 253 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 dhcpv6.h |   2 +
 passt.1  |  31 +++++++
 passt.h  |  12 +++
 5 files changed, 357 insertions(+), 1 deletion(-)

-- 
2.54.0