Re: MVP for a DHCP server (was Re: ISC's EoL dhcp suite, including dhcpd)

 ---- On Mon, 14 Jul 2025 19:02:13 +0100  Martin Husemann <[email protected]> wrote --- 
 > On Mon, Jul 14, 2025 at 05:45:10PM +0100, Roy Marples wrote:
 > > Would you consider an option to use ethers(5) for this instead?
 > > This would allow IPv4 mapping, but not IPv6.
 > 
 > That is another indirection and quite inconvenient in the diskless
 > client case. I want the information as close to the root path/next
 > server option configuration as possible.

Right, but I'm trying to avoid any kind of per host configuration right now.
If we can achieve static DHCPv4 assignmen via ethers then I think that's MVP for now.

 > For IPv6 things are a bit easier as auto configuration just works and
 > is static (as long as you don't use RFC 4941, or maybe even if you do
 > [I actually don't know - is it?]) and the only option I would like to
 > have is to disallow IPv6 for certain clients completely (for dissallow =
 > do not give them public prefixes, do not give them RAs, I haven't seen
 > a use case where local-only IPv6 needed to be disabled).

Right, but we are talking about DHCPv6 which is a different beast.
And that is very client dependent on how the DUID would be formed.

Roy