Files
KNELServerBuild/ProjectCode/ConfigFiles/NTP/ntp.conf
T
mrcharles f010fa9609 feat(network): use pfv-netinfra-01/02 as redundant DNS and NTP
Route every host built by this project through the new
pfv-netinfra-01 (192.168.3.252) / pfv-netinfra-02 (192.168.3.253)
pair for both name resolution and time, with automatic failover.

- NTP: replace the single pfv-netboot.knel.net upstream with both
  netinfra servers (iburst) so time sync survives either one failing.
- DNS: add a managed static /etc/resolv.conf (new ConfigFiles/Resolv/).
  The repo previously had no resolver configuration at all. Both servers
  are listed so glibc falls through to the secondary on failure.
- DHCP: request domain-name-servers/domain-search/ntp-servers and
  supersede them to the netinfra pair, so a DHCP renew can't silently
  revert to whatever the DHCP server advertises.
- SetupNewSystem.sh: deploy resolv.conf (robustly replacing any
  systemd-resolved/NetworkManager symlink) and add pfv-netinfra to the
  NTP-server self-exclusion guard so those boxes don't client off
  themselves.

LAN IPs are used throughout (not the knel.net hostnames) because those
hostnames resolve to Tailscale CGNAT addresses, not the LAN addresses,
and NTP must come up before DNS. Add a validation test asserting the
config is present and both servers actually answer DNS and NTP queries.

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driftfile /var/lib/ntp/ntp.drift
leapfile /usr/share/zoneinfo/leap-seconds.list
# Redundant upstream time sources: pfv-netinfra-01/02 (Technitium/Pi-hole hosts
# also serving NTP). IPs are used (not hostnames) because the knel.net name for
# these hosts resolves to a Tailscale CGNAT address, not the LAN address, and
# because NTP must come up before DNS is available. iburst speeds initial sync.
server 192.168.3.252 iburst
server 192.168.3.253 iburst
restrict 127.0.0.1
restrict ::1
interface ignore wildcard
interface listen 127.0.0.1