Re: proposal: dhcpcd-base as standard DHCP client starting with Trixie
On Thu, Jun 22, 2023 at 3:58 PM Santiago Ruano Rincón
<santiagorr@riseup.net> wrote:
> El 20/06/23 a las 08:29, Martin-Éric Racine escribió:
> > On Mon, Jun 19, 2023 at 9:11 PM Santiago Ruano Rincón
> > <santiagorr@riseup.net> wrote:
> > > El 19/06/23 a las 13:54, Martin-Éric Racine escribió:
> > > > Greetings,
> > > >
> > > > Seeing how the ISC DHCP suite has reached EOL upstream, now might be a
> > > > good time to re-visit Debian's choice of standard DHCP client shipping
> > > > with priority:important.
> > > >
> > > > I hereby propose bin:dhcpcd-base:
> > > >
> > > > 1) already supported by ifupdown.
> > > > 2) dual stack (DHCPv4, Bonjour, RA, DHCPv6 with PD) with privilege separation.
> > > > 3) writes both IPv4 and IPv6 name servers to /etc/resolv.conf
> > > > 4) supports /etc/resolv.conf.head and /etc/resolv.conf.tail
> > > > 5) a mere inet line in /etc/network/interfaces is sufficient to
> > > > configure both stacks.
> > > ...
> > >
> > > I agree that dhcpcd seems the best alternative to isc-dhcp-client for
> > > the moment, and I'll make the relevant changes in ifupdown as soon as I
> > > can. Josué, any thoughts?
> >
> > 1) As someone pointed out in the thread, the reason why
> > isc-dhcp-client had priority:important probably was to ensure that
> > debootstrap would pull it, since debootstrap ignores Recommends and
> > packages with a priority lower than standard.
> >
> > 2) However, as long as ifupdown explictly depends on a package, it can
> > also pull dependencies with a lower priority. Right now ifupdown
> > Recommends "isc-dhcp-client | dhcp-client" which debootstrap would
> > ignore. It would have to Depends "dhcpcd-base | dhcp-client" instead.
> >
> > 3) At that point, swapping the priority of isc-dhcp-client and
> > dhcpcd-base merely becomes "nice to have". Heck, the priority of both
> > could, in principle, be optional, just as long as ifupdown explicitly
> > Depends on a DHCP client, and the first alternative is a real package.
>
> I was about to bump dhcpcd-base as ifupdown dependency, but... if
> isc-client-dhcp is a Recommends, is because not all users want a dhcp
> client installed, where all the ipv4 is handled statically, and ipv6 is
> done via SLAAC. As a user, I don't want/need to pull in dhcpcd-base the
> next upgrade.
>
> So I'd prefer to go forward with the steps proposed by Simon, and
> s/isc-dhcp-client/dhcpcd-base in ifupdown's Recommends:
> Unless there is a strong objection, I'll file the override bug report.
The point has always been to ship some ifupdown-supported DHCP client
by default. This can be done either by keeping the default client's
priority to important or by making ifupdown Depends on one. I prefer
the later.
Martin-Éric
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