Julien LutranandClaude Opus 5
7e6b8f2848
Follow-up to a7f1ac6. The Archer C7's DHCP reservations did not carry
over to the FTTH box, so anything still on DHCP was one lease renew away
from moving — as blocky already demonstrated by taking LAN DNS with it.
jellyfin-server and jellyfin-client are now static too; homeassistant
stays dynamic on purpose (it never had a reservation).
Records three things that cost time to find:
- jellyfin-client can never use netplan: the kiosk raw.lxc bind-mounts
the host /run/udev read-only, so netplan generate fails and config
silently does not regenerate at boot. It uses systemd-networkd now.
- LAPTOP719974 and patate also lost their reserved addresses.
- ks4 cannot serve as an IPv6 exit: it has a global v6 address and a
default v6 route but no working v6 egress, so extending the torrent
tunnel to ::/0 is not an option. IPv6 stays disabled in the container.
Also notes the C7 + LTE box kept as fallback: only the gateway differs.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Storage: nas
Storage + backup host on the LAN, added 2026-08.
- Always-on host. nuc is now an on-demand media box (see nuc/README.md), so everything that must stay up — LAN DNS, the HTTP proxy, torrents — lives here.
- Debian 13, Supermicro A1SAi-2750F / Intel Atom C2750 (8 c, 20 W, ECC DDR3) — build procedure: nas-install.md
- SSH:
ssh -i id_rsa_claude root@192.168.0.4 - No iGPU (Avoton is headless; video is the AST2400 BMC). Anything needing hardware transcoding stays on nuc.
- Pools:
incus— ZFS mirror across the last partition of both 120 GB SSDs; holds this host's container roots. OS itself is on mdraid RAID1 + ext4 across the same disks (rationale in nas-install.md §2).tank— the 4 TB WD Red, on direct SATA. This is the whole point of the box: the disk used to hang off a JMicron USB bridge on nuc that suspended the pool 61 times in 30 days (nuc/usb4t-dropouts.md). Single vdev, accepted — nothing on it is irreplaceable.
tank/media→/export/media: the media library. Exported read-only over NFSv4 to nuc, wherejellyfin-serverreads it; written locally only bytransmission-bt.- Backups: nuc ↔ nas cross-replication (each host's instances live on the other), plus the ks4 pull leg — nas-install.md §9, ks2/nas-seed.md.
Instances
| Name | IP | Doc | Features |
|---|---|---|---|
| blocky | 192.168.0.254 | — | unprivileged, autostart; DNS ad-blocker for the LAN. Moved from nuc 2026-08-30 so it survives nuc being powered off |
| privoxy | 192.168.0.11 | — | unprivileged, autostart; filtering HTTP proxy, listens on :3128 (not privoxy's default 8118); static config in /etc/systemd/network/eth0.network (Gateway=192.168.0.1), DNS=192.168.0.254. Moved from nuc 2026-08-30 |
| transmission-bt | 192.168.0.7 | ✅ | unprivileged, autostart; always-on WireGuard full tunnel → ks4 (egress = 193.70.35.17, kill switch: no default route in main, wg-quick's fwmark/suppress_prefixlength rules send traffic to table 51820 — netplan apply wipes those rules, so always systemctl restart wg-quick@wg0 after it); IPv6 disabled (/etc/sysctl.d/99-no-ipv6.conf) since the tunnel is AllowedIPs = 0.0.0.0/0 only and the FTTH box's native IPv6 RA bypassed the kill switch entirely. Extending the tunnel to ::/0 is not currently possible: ks4 has a global v6 address and a default v6 route but no working v6 egress (verified 2026-09-16 — both ICMP and TCP to the v6 internet fail while v4 is fine), so it cannot act as a v6 exit. Fix OVH v6 on ks4 first if v6 peers are ever wanted; /export/media disk device (shift=true), downloads to /media/downloads; web UI :9091 (LAN only). Moved from nuc 2026-08-30 |
Backup pools hosted here
| incus pool | dataset | receives |
|---|---|---|
nucbackup |
tank/backup/nuc |
nuc's instances (pushed nightly, 03:30) |
ks4backup |
tank/backup/ks4 |
ks4's instances (pulled over WG, 05:00 — after FTTH) |
nasbackup |
tank/backup/nas |
nas's own instances (local copy, 04:00) |
nas's own instances are replicated locally rather than to nuc: nuc is
an on-demand box and usually powered off, so it is not a usable backup
target. nasbackup lives on tank, a different pool from the incus
SSD mirror the instances run on.