openwrt/luci

luci-app-ddns: DDNS NCM interface not shown

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#2,773 opened on Jun 16, 2019

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help wantedrelease/18.06 (end-of-support)

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Description

I have setup 18.06.2 with ME909s-120 and using NCM.

In luci I see a wwan_4 under interfaces. It says Protocol: Virtual dynamic interface (DHCP client) and it seems to have been created automatically.

When I go to DDNS settings at Network [IPv4] there is only wwan and no mention of wwan_4

I do need to set it up manually as wwan_4 using ssh to get DDNS working properly. I wonder why wwan_4 is not listed at ddns settings?

Contributor guide

Research direction
Investigate how LuCI generates the list of network interfaces for DDNS and why wwan 4 is omitted. Start by examining the relevant LuCI Lua files (e.g., /usr/lib/lua/luci/model/cbi/ddns.lua) to understand the interface filtering logic. Check if the interface detection uses a specific pattern that excludes virtual interfaces like wwan 4. Use the OpenWrt build environment to replicate the issue and test changes.
Tech stack
javascript
Domain
backend
Issue type
Bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
GitOpenWrt development setup
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
65