[FS#457] LEDE 17.01-rc1 r3042: Changing LAN static IP address doesn't force new DHCP addresses LEDE

[LEDE Bugs]

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

User who did this - Rich Brown (richb-hanover) 

Attached to Project - LEDE Project
Summary - LEDE 17.01-rc1 r3042: Changing LAN static IP address doesn't force new DHCP addresses LEDE
Task Type - Bug Report
Category - Base system
Status - Unconfirmed
Assigned To - 
Operating System - All
Severity - Medium
Priority - Very Low
Reported Version - Trunk
Due in Version - Undecided
Due Date - Undecided
Details - Install LEDE 17.01-rc1 r3042 on both Archer C7 and Netgear WDR3400:

I log in successfully to 192.168.1.1, enter a password, then use web gui to change static IP address of the LAN interface (to 192.168.250.1)

The web gui shows a spinner, but (of course) doesn't reconnect to the router, since the address has changed.

I waited a while (60 seconds?) and my OSX box doesn't notice that the Ethernet has a new IP - it's still on 192.168.1.x

If I disconnect the Ethernet cable and reconnect immediately, within a second or two, OSX detects the new (correct) IP address in the  correct 192.168.250.0/24 subnet.

I think OpenWrt/CeroWrt used to recover without requiring a disconnect of the Ethernet cable (but could be mistaken).

This isn't a severe problem, because disconnecting/reconnecting the Ethernet is a perfect workaround.

More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=457