jim, dave and the vibe AP are pure L2, but RouterOS ships ip-forward and IPv6 forward on, and with IPv6 forwarding enabled it also advertises itself as a default router. After the 7.18 -> 7.23 upgrade clients began picking up the switches as IPv6 default routers alongside river. Replace the earlier advertise-dns framing (which only strips RA options, not the router lifetime) with the actual requirement: ip-forward=no, IPv6 forward=no, accept-router-advertisements=no, ra-lifetime=0, and a re-check after every RouterOS upgrade. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Home site
The home network (domain h.nul.ie): a redundant pair of routers in front of a VM host, an
NVMe-oF storage target, an IoT container host, and a workstation. The two routers — river (a VM)
and stream (a physical box) — are built from one shared
routing-common definition as an active/backup VRRP
pair, and everything clients touch (gateway, DNS) is a floating VIP that follows the master.
- Source:
nixos/boxes/home/
Boxes
| Box | Role | Host |
|---|---|---|
palace |
VM host | physical |
river |
Primary router (VRRP pair with stream) |
VM on palace |
stream |
Secondary router (VRRP pair with river) |
physical |
cellar |
NVMe-oF / SPDK storage target | VM on palace |
sfh |
NixOS container host (containers on its page) | VM on palace |
castle |
Workstation / gaming desktop | physical |
Router VIPs
Clients use per-VLAN floating VIPs as their gateway and DNS server; keepalived moves them between
river and stream. The addresses, DHCP/RA behavior and failover mechanics are documented once in
Router VIPs and Router HA.
Networks
The site separates core management, high-MTU trusted traffic, general trusted traffic, untrusted
clients and the two WAN paths. VLAN IDs, prefixes, MTUs and router addressing live in the canonical
home section of networking.md.
Switch fabric
The boxes hang off three hand-configured switches — jim and dave (MikroTik, RouterOS) and
brian (Ubiquiti, UniFi) — which are not managed by this flake. The physical topology, VLAN
map, the Digiweb WAN path (trunked VLAN 10 + PVID 140 at the ONT edge), and the multi-ONT plan are
documented in switches.md.
Wireless APs
The Wi-Fi APs — vibe (MikroTik cAP ax) and wave (Cudy AX3000 on OpenWrt) — are dumb APs, also
not managed by this flake. The shared VLAN-trunk design, SSIDs, per-AP management addressing,
and the OpenWrt flash/config for wave are in aps.md.