[FS#4022] uci set 'network. at device[-1]=device' replaces existing device, not adds a new one

[OpenWrt Bugs]

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

User who did this - Brian J. Murrell (brianjmurrell) 

Attached to Project - OpenWrt/LEDE Project
Summary - uci set 'network. at device[-1]=device' replaces existing device, not adds a new one
Task Type - Bug Report
Category - Base system
Status - Unconfirmed
Assigned To - 
Operating System - All
Severity - Critical
Priority - Very Low
Reported Version - openwrt-21.02
Due in Version - Undecided
Due Date - Undecided
Details - Supply the following if possible:
 - Device problem occurs on tplink,archer-c7-v2
 - Software versions of OpenWrt/LEDE release, packages, etc. 21.02.0
 - Steps to reproduce
# uci show network | grep @device
network. at device[0]=device
network. at device[0].type='bridge'
network. at device[0].ports='eth0.15'
network. at device[0].name='br-guest'
# uci set 'network. at device[-1]=device'
# uci set 'network. at device[-1].type=bridge'
# uci set 'network. at device[-1].ports=eth1.1'
# uci set 'network. at device[-1].name=br-lan'
# [ doesn't matter if I "uci network commit" here or not ]
# uci show network | grep @device
network. at device[0]=device
network. at device[0].type='bridge'
network. at device[0].ports='eth1.1'
network. at device[0].name='br-lan'
 
See how the br-lan @device[0] replaced br-guest @device[0], not added a new @device[1] to network.


More information can be found at the following URL:
https://bugs.openwrt.org/index.php?do=details&task_id=4022

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