URL: https://mkdocs.justinsforge.com/memory/general/reference_gfiber_gateway/

Google Fiber Network Box

What it is

Edge router for the home LAN, serving 192.168.86.0/24 and acting as DHCP server + NAT gateway for Google Fiber service.

Field	Value
IP	192.168.86.1
MAC	00:bc:2f:7f:69:c0 (OUI 00:BC:2F consistent with Google Fiber-issued gear)
Mgmt UI	None scriptable. Justin manages via the Google Fiber mobile app.
API	None. Consumer-grade firmware.
SSH	Closed. Not user-accessible.
Replaceable by	Mikrotik CRS328 + dedicated edge router (Phase 5 of the Mikrotik handoff).

Forge Integration

Only what's possible:

• Uptime ping monitor: include 192.168.86.1 in any LAN health probe. If it goes down, the whole house is offline (and so is this monitoring loop — log to disk locally for post-mortem).
• HA ping binary_sensor: optional, add binary_sensor.gfiber_gateway to detect WAN outages from the LAN side.

Don't

• Don't try to SSH, snmpwalk, or scrape the web UI. There's no surface.
• Don't recommend Tailscale on the gateway, can't be done.
• Don't plan firewall rules at this layer — that's a Phase 5 Mikrotik edge-router job per the handoff.

Status

2026-05-20: Documented. No active monitor yet. AdGuard (CT 105) is the LAN DNS resolver in front of the gateway.

[Claude Code], 2026-05-20.