Dashboard: Network Status widget shows the link-local IPv6 (fe80::) instead of the WAN global IPv6 address.

[kateatlinksys]

Reproduce steps:

1. Login to Linksys Now.
2. Go to Dashboard / Home.
3. Look at the "Network Status" widget → IPV6 field.

Actual result:
It shows the link-local address fe80::7612:13ff:fe21:5394 (scope link).
Backend (serial console, ip -6 addr) confirms WAN interface eth0 actually holds a global IPv6:
2401:e180:8801:d79d:7612:13ff:fe21:5394/64 scope global — but the widget displays the fe80:: link-local one instead.

Expected result:
The widget should show the WAN global (routable) IPv6 address, not the link-local fe80:: address.

Env.: M60DU-EU / Pinnacle 2.0 FW 1.2.2.26062820 / Linksys Now 2.5.0.700525

Log:
[GUI_dashaoard_ipv6address_error_0714.txt](https://github.com/user-attachments/files/29990431/GUI_dashaoard_ipv6address_error_0714.txt

Screenshot:

[AustinChangLinksys]

🔍 Automated investigation (preliminary triage)

Line: 2.x / USP (TR-369)
Root cause (UI defect, backend data is correct):

• The Network Status widget renders the first entry of the WAN interface's IPv6 address list without filtering by address scope.
• The backend (Device.IP.Interface.2.IPv6Address.*) returns 4 addresses; index .1 is the link-local fe80:: address, while the routable global addresses are at .2/.3/.4. The UI code takes .first, so it displays the link-local one.

Evidence (from attached log.txt):

1. Backend returns the full IPv6 address set for WAN (Interface.2), including the global address the serial console reported (2401:e180:8801:d79d:... at .4):

#14 GET ← (88ms)
  "Device.IP.Interface.2.IPv6Address.1.IPAddress": "fe80::7612:13ff:fe21:5394",
  "Device.IP.Interface.2.IPv6Address.2.IPAddress": "2401:e180:8831:505f::1",
  "Device.IP.Interface.2.IPv6Address.3.IPAddress": "2401:e180:8831:505f:7612:13ff:fe21:5394",
  "Device.IP.Interface.2.IPv6Address.4.IPAddress": "2401:e180:8801:d79d:7612:13ff:fe21:5394"

2. Code path confirmed on dev-2.5.0 — the WAN data service keeps every non-empty address with no scope filtering:

// lib/page/internet_settings/services/usp_wan_data_service.dart
final ipv6Addresses = ipv6.items
    .map((addr) => addr.ipAddress)
    .where((ip) => ip.isNotEmpty)   // no scope/link-local filter
    .toList();

3. The card then blindly renders the first element:

// lib/page/internet_settings/cards/usp_network_status_card.dart
if (wan.ipv6Addresses.isNotEmpty)
  ... value: wan.ipv6Addresses.first,   // .1 == fe80:: link-local

Suggested direction (not a fix commitment): filter out link-local (fe80::/10) scope addresses and prefer a global/routable address when selecting the value to display.

Confidence: High — backend response confirms global IPv6 present in the payload; code path on dev-2.5.0 confirms UI selects .first with no scope filtering.

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Auto-generated triage by Austin's tooling, pending Austin's review. Not a fix commitment.