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wired: comma-separated VLAN lists cause false missing-VLAN alerts

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@rslater-cs 已经在做这个了。

开始于 2026年9月9日。

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描述

On CM5 bigbox firmware bigbox-v1-cm-v0.11.2-2026-09-09T110059-v24.10.7, the wired service incorrectly reports missing VLANs and enters degraded state.

The switch’s GE8 uplink reports:

1UP, 4T, 8T, 32T, 100T

However, parse_vlan_membership_string() in src/services/hal/backends/wired/providers/rtl8380m_http.lua:476 returns only VLAN 100.

The parser splits on whitespace, leaving trailing commas on earlier tokens. Its anchored pattern then rejects those tokens.

Impact

False missing-VLAN alerts for admin VLAN 8, user VLAN 32, and WAN VLAN 4 on switch-uplink-cm5. Raw switch data contains all required VLANs; this finding does not establish a forwarding failure.

Reproduction

Observed during a read-only inspection on 2026-09-09. Reproduced using source verified identical to the installed provider by SHA-256:

78f919c72e4151b902e00b0ba07038d8792729efc31288803170029b970f35ba
Input Actual VLANs Expected VLANs
1UP, 4T, 8T, 32T, 100T [100] [1,4,8,32,100]
8T, 32T, 100UP [100] [8,32,100]
1UP 4T 8T 32T 100T [1,4,8,32,100] [1,4,8,32,100]

The first string comes from the GE8 uplink; the second also occurs on external switch ports. The whitespace-only case already parses correctly.

Acceptance criteria

  • Parse comma-separated and existing whitespace-separated memberships.
  • Preserve tagged, untagged, forbidden, and PVID flags.
  • Add regression coverage for both observed comma-separated strings and the whitespace-only case.
  • Verify the three false trunk-carriage alerts disappear.
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