[PATCH installer v2 0/9] add IPv6 SLAAC and v6-only support

[Christoph Heiss <c.heiss@proxmox.com>]

Most glaringly, neither the GUI nor TUI handled IPv6-only setups
correctly, in that the pre-filled values for the networking setup simply
defaulted to the IPv4 defaults.

Patch #1-#5 rework the installation "backend" and GUI side of things.

Patch #6 enables support for /127 and /128 IPv6 CIDRs, which we do
support elsewhere.

Finally, patch #8 enables sending router solicitations when the
installer starts, such than any IPv6 (SLAAC) configuration is retrieved.

Patches #6-#9 are independent and can be applied individually as such,
if desired.

History
=======

v1: https://lore.proxmox.com/pve-devel/20260508184546.113293-1-c.heiss@proxmox.com/

Notable changes v1 -> v2:
  * dropped some old test data
  * fix leftover ipconf usages in Proxmox::Install and GUI
  * give routers a 2sec window to respond to router solicitations

Diffstat
========

pve-installer:

Christoph Heiss (9):
  install: drop trivial fromjs() wrapper and use JSON::from_json()
  install: move network subroutines to Proxmox::Sys::Net
  install: use run_env->{network} instead of old run_env->{ipconf}
  gui: use run_env->{network} instead of old run_env->{ipconf}
  sys: net: drop the now-unused `ipconf` runtime environment
    configuration
  sys: net: allow up to /128 netmask for IPv6
  sys: net: ignore ipv6 nameservers with zone identifiers
  common: options: rework network address setup to handle ipv6-only
  unconfigured: try to retrieve IPv6 SLAAC addresses on startup

 Proxmox/Install.pm                            |   6 +-
 Proxmox/Install/RunEnv.pm                     | 172 +------------
 Proxmox/Sys/Net.pm                            | 238 ++++++++++++------
 debian/control                                |   2 +
 proxinstall                                   |  86 +++++--
 ...n_from_dhcp_no_default_domain.run-env.json |  76 ------
 .../no_fqdn_from_dhcp.run-env.json            |  76 ------
 .../tests/resources/run-env-info.json         |  76 ------
 proxmox-installer-common/src/options.rs       |  89 ++++---
 unconfigured.sh                               |  27 ++
 10 files changed, 310 insertions(+), 538 deletions(-)

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