[FS#1009] Status page show LAN bridge interface as IPv4 WAN

[LEDE Bugs]

A new Flyspray task has been opened.  Details are below. 

User who did this - chenrui (raymond) 

Attached to Project - LEDE Project
Summary - Status page show LAN bridge interface as IPv4 WAN
Task Type - Bug Report
Category - Base system
Status - Unconfirmed
Assigned To - 
Operating System - All
Severity - High
Priority - Very Low
Reported Version - lede-17.01
Due in Version - Undecided
Due Date - Undecided
Details - My device is Asus RT-N14U
Software version: lede-17.01.2

config lan and wlan interface, then config IPv4 wan interface(DHCP/Static)
After wan interface up, goto status/overview page
then you will find IPv4 wan status is interface "br-lan" but not eth0.2(real IPv4 wan interface)

seems this will lead a lot packages work abnormal.
take openconnect for example.
after process openconnect is running it will add a static route to vpn server, the via interface of this static route is always br-lan but not eth0.2, it is wrong.
this will lead router can not connect to vpn server.


One or more files have been attached.

More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=1009