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docs: DHCP pool narrowed to .241-.254; ZimaOS IP drift documented

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- network.md: updated pool range, fixed 'below .100' claim, added changelog
- 107-dns.md: updated pool range, fixed 'below .100' claim, added changelog
- 100-zimaos.md: documented IP drift (.195→.103) and Caddy 502
- plan: .hermes/plans/2026-06-03_223218-dhcp-pool-exclude-static-ips.md

DHCP scope changed via Technitium API. No static IPs changed. Old leases
(.101-.110) expire naturally by 2026-06-04.
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authentik Default Admin
2026-06-03 22:50:33 +02:00
parent 4c4cfb56cd
commit edac189aa7
4 changed files with 257 additions and 5 deletions
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7
infrastructure/network.md
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@@ -48,9 +48,9 @@ hubris internal bridges:
## DHCP
- **Household (`192.168.178.x`)**: Fritz!Box built-in DHCP. Proxmox `vmbr1` has a reservation: MAC `84:47:09:6b:e7:58` → `192.168.178.10`.
- **Homelab (`192.168.8.x`)**: Technitium on [CT 107](../containers/107-dns.md) at `192.168.8.2`. Range `192.168.8.100–192.168.8.240`, gateway `192.168.8.1`, DNS `192.168.8.2`.
- **Homelab (`192.168.8.x`)**: Technitium on [CT 107](../containers/107-dns.md) at `192.168.8.2`. Range `192.168.8.241–192.168.8.254`, gateway `192.168.8.1`, DNS `192.168.8.2`.
Most homelab LXCs use static IPs below `.100`. DHCP only covers new/transient containers.
Static IPs span `.101–.239` (all LXCs, VMs, and workstations). DHCP pool narrowed to `.241–.254` (2026-06-03) to avoid overlap and IP conflicts.
## DNS
@@ -77,6 +77,9 @@ No NAT on Proxmox — traffic flows without double-NAT.
## Changelog
### 2026-06-03 — DHCP pool narrowed to `.241–.254`
Previous pool `.100–.240` overlapped with all static LXCs/VMs (` .101–.239`), creating IP conflict risk (DHCP could hand out an IP that a static service expects). Shrunk pool to `.241–.254` via Technitium API. No services re-IP'd. 11 stale DHCP leases in `.101–.110` will expire naturally. **Open:** ZimaOS (VM 100) holds DHCP lease `.103` but inventory expects `.195` — needs static IP set inside VM. See [plan](../plans/2026-06-03-dhcp-pool-exclude-static-ips.md).
### 2026-06-02 — Executed migration; Proxmox as subnet router
Fritz!OS 8.x does not support second IP networks on LAN ports, so the final design uses Proxmox as the router: `vmbr1` (eno1 → SODOLA → Fritz!Box) is the uplink at `192.168.178.10`; `vmbr0` is a portless internal bridge with `192.168.8.1` alias as the LXC gateway. Technitium DHCP enabled for `192.168.8.100–240`. Caddy service unit was missing and recreated. See [migration plan](../plans/2026-06-01-slate-ax-to-sodola-migration.md).