proposal: dhcpcd-base as standard DHCP client starting with Trixie

[Martin-Éric Racine <martin-eric.racine@iki.fi>]

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.

While dhcpcd development became somewhat erratic last year due to
upstream's health issues, things are seemingly back to normal.
Additionally, a new developer has joined and is willing to take over
the development should upstream's health deteriorate again.

Martin-Éric