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dhcp: add support for RFC8925 IPv6-Only Preferred Option for DHCPv4
Closed, DuplicatePublicFEATURE REQUEST

Description

From the RFC:

One of the biggest challenges of deploying IPv6-only LANs is that such networks might contain a rather heterogeneous collection of hosts. While some hosts are capable of operating in IPv6-only mode (either because the OS and all applications are IPv6-only capable or because the host has some form of 464XLAT [RFC6877] deployed), others might still have IPv4 dependencies and need IPv4 addresses to operate properly. To incrementally roll out IPv6-only, network operators might need to provide IPv4 on demand, whereby a host receives an IPv4 address if it needs it, while IPv6-only-capable hosts (such as modern mobile devices) are not allocated IPv4 addresses.

ISC-DHCP provides

option v6-only-preferred uint32;

The number of seconds the client should disable DHCPv4 for.
This option and its use by the client are specified in RFC 8925.

Details

Version
-
Is it a breaking change?
Perfectly compatible

Event Timeline

c-po claimed this task.
c-po edited a custom field.
c-po changed Is it a breaking change? from Unspecified (possibly destroys the router) to Perfectly compatible.
c-po changed Issue type from Unspecified (please specify) to improvement.