What is 'config ifstate' in LuCI file?

[lleachii]

Can someone explain what this config in /etc/config/luci is for?
I'm trying to clean up old config files and noticed this (and cannot find documentation):

config ifstate                                 
	option interface 'xxxx'     
	option ifname 'xxx0'                    
	option bridge 'false'

Also, is this config needed in versions 18 and 19?

[trendy]

Good question. I have there 2 vpn interfaces, 1 of which is not operational anymore.

config ifstate
	option interface 'elvetias'
	option ifname 'tun1'
	option bridge 'false'

config ifstate
	option interface 'vps'
	option ifname 'tun0'
	option bridge 'false'

[lleachii]

My config was from an IPENCAP tunnel. After just removing the config a few moments ago, it has remained operational. In addition, adding a test interface with the same settings, didn't append the 'config ifstate' section to /etc/config/luci

I believe this is may be a remnant config from LEDE v17 to disable bridging - but I need some clarity on that.

[jow]

Its internal backup entries made by LuCI to remember the original state of the bridge and ifname options. After someone complained about LuCI adding orig_bridge and orig_ifname fields to /etc/config/network, the backup settings have been moved to /etc/config/luci instead. You can safely remove them.